A medical worker performs an antigen test at a COVID-19 quick test center of German drugstore chain dm-drogerie markt amid the coronavirus disease (COVID-19) pandemic, in Karlsruhe, Germany, March 4, 2021. REUTERS/Ralph Orlowski 

A medical worker performs an antigen test at a COVID-19 quick test center of German drugstore chain dm-drogerie markt amid the coronavirus disease (COVID-19) pandemic, in Karlsruhe, Germany, March 4, 2021. REUTERS/Ralph Orlowski 

A medical worker takes a swab sample from a person at a COVID-19 quick test center of German drugstore chain dm-drogerie markt amid the coronavirus disease (COVID-19) pandemic, in Karlsruhe, Germany, March 4, 2021. REUTERS/Ralph Orlowski 

A general view of COVID-19 quick test center of German drugstore chain dm-drogerie markt amid the coronavirus disease (COVID-19) pandemic, in Karlsruhe, Germany, March 4, 2021. REUTERS/Ralph Orlowski 

A COVID-19 quick test center of German drugstore chain dm-drogerie markt is seen amid the coronavirus disease (COVID-19) pandemic, in Karlsruhe, Germany, March 4, 2021. REUTERS/Ralph Orlowski 

A medical worker performs an antigen test at a COVID-19 quick test center of German drugstore chain dm-drogerie markt amid the coronavirus disease (COVID-19) pandemic, in Karlsruhe, Germany, March 4, 2021. REUTERS/Ralph Orlowski 

A medical worker performs an antigen test at a COVID-19 quick test center of German drugstore chain dm-drogerie markt amid the coronavirus disease (COVID-19) pandemic, in Karlsruhe, Germany, March 4, 2021. REUTERS/Ralph Orlowski 

A medical worker performs an antigen test at a COVID-19 quick test center of German drugstore chain dm-drogerie markt amid the coronavirus disease (COVID-19) pandemic, in Karlsruhe, Germany, March 4, 2021. REUTERS/Ralph Orlowski 

A medical worker takes a swab sample from a person at a COVID-19 quick test center of German drugstore chain dm-drogerie markt amid the coronavirus disease (COVID-19) pandemic, in Karlsruhe, Germany, March 4, 2021. REUTERS/Ralph Orlowski 

A medical worker takes a swab sample from a person at a COVID-19 quick test center of German drugstore chain dm-drogerie markt amid the coronavirus disease (COVID-19) pandemic, in Karlsruhe, Germany, March 4, 2021. REUTERS/Ralph Orlowski 

A medical worker presents an antigen test at a COVID-19 quick test center of German drugstore chain dm-drogerie markt amid the coronavirus disease (COVID-19) pandemic, in Karlsruhe, Germany, March 4, 2021. REUTERS/Ralph Orlowski 

Medical staff work at a COVID-19 quick test center of German drugstore chain dm-drogerie markt amid the coronavirus disease (COVID-19) pandemic, in Karlsruhe, Germany, March 4, 2021. REUTERS/Ralph Orlowski 

Medical staff work at a COVID-19 quick test center of German drugstore chain dm-drogerie markt amid the coronavirus disease (COVID-19) pandemic, in Karlsruhe, Germany, March 4, 2021. REUTERS/Ralph Orlowski 

A medical worker stands outside a COVID-19 quick test center of German drugstore chain dm-drogerie markt amid the coronavirus disease (COVID-19) pandemic, in Karlsruhe, Germany, March 4, 2021. REUTERS/Ralph Orlowski 

A medical worker performs an antigen test at a COVID-19 quick test center of German drugstore chain dm-drogerie markt amid the coronavirus disease (COVID-19) pandemic, in Karlsruhe, Germany, March 4, 2021. REUTERS/Ralph Orlowski 

A medical worker takes a swab sample from a person at a COVID-19 quick test center of German drugstore chain dm-drogerie markt amid the coronavirus disease (COVID-19) pandemic, in Karlsruhe, Germany, March 4, 2021. REUTERS/Ralph Orlowski 

Trial observers and representatives of the press sit in a courtroom, before the ruling in a Volkswagen Diesel case, at the Federal Court of Justice in Karlsruhe, Germany, May 25, 2020. Thorsten Gutschalk/Pool via REUTERS 

Plaintiff Herbert Gilbert is seen in a courtroom, before the ruling in a Volkswagen Diesel case, at the Federal Court of Justice in Karlsruhe, Germany, May 25, 2020. Thorsten Gutschalk/Pool via REUTERS 

Judges Stefanie Roloff, Vera von Pentz, Stephan Seiters (Chairman), Christiane Oehler and Oliver Klein (L-R) arrive for the ruling in a Volkswagen Diesel case, at the Federal Court of Justice in Karlsruhe, Germany, May 25, 2020. Thorsten Gutschalk/Pool via REUTERS 

Plaintiff Herbert Gilbert is seen in a courtroom, as the judges (L-R) Stefanie Roloff, Vera von Pentz, Stephan Seiters (Chairman), Christiane Oehler and Oliver Klein arrive, for the ruling in a Volkswagen Diesel case, at the Federal Court of Justice in Karlsruhe, Germany, May 25, 2020. Thorsten Gutschalk/Pool via REUTERS 

Swimmers jump into the water during the start of the 2020 outdoor swimming season in Karlsruhe, Germany, February 28, 2020. REUTERS/Ralph Orlowski 

Swimmers jump into the water during the start of the 2020 outdoor swimming season in Karlsruhe, Germany, February 28, 2020. REUTERS/Ralph Orlowski 

Swimmers attend the start of the 2020 outdoor swimming season in Karlsruhe, Germany, February 28, 2020. REUTERS/Ralph Orlowski TPX IMAGES OF THE DAY 

Swimmers attend the start of the 2020 outdoor swimming season in Karlsruhe, Germany, February 28, 2020. REUTERS/Ralph Orlowski 

Swimmers attend the start of the 2020 outdoor swimming season in Karlsruhe, Germany, February 28, 2020. REUTERS/Ralph Orlowski 

Swimmers attend the start of the 2020 outdoor swimming season in Karlsruhe, Germany, February 28, 2020. REUTERS/Ralph Orlowski 

Swimmers attend the start of the 2020 outdoor swimming season in Karlsruhe, Germany, February 28, 2020. REUTERS/Ralph Orlowski 

Swimmers jump into the water during the start of the 2020 outdoor swimming season in Karlsruhe, Germany, February 28, 2020. REUTERS/Ralph Orlowski 

Swimmers attend the start of the 2020 outdoor swimming season in Karlsruhe, Germany, February 28, 2020. REUTERS/Ralph Orlowski 

Swimmers jump into the water during the start of the 2020 outdoor swimming season in Karlsruhe, Germany, February 28, 2020. REUTERS/Ralph Orlowski 

Swimmers jump into the water during the start of the 2020 outdoor swimming season in Karlsruhe, Germany, February 28, 2020. REUTERS/Ralph Orlowski 

One of twelve men suspected of involvement in a far-right group is escorted by police as he arrives for his hearing at Germany's general prosecutor in Karlsruhe , Germany, February 15, 2020. REUTERS/Kai Pfaffenbach 

One of twelve men suspected of involvement in a far-right group is escorted by police as he arrives for his hearing at Germany's general prosecutor in Karlsruhe , Germany, February 15, 2020. REUTERS/Kai Pfaffenbach 

One of twelve men suspected of involvement in a far-right group is escorted by police as he arrives for his hearing at Germany's general prosecutor in Karlsruhe , Germany, February 15, 2020. REUTERS/Kai Pfaffenbach 

One of twelve men suspected of involvement in a far-right group is escorted by police as he arrives for his hearing at Germany's general prosecutor in Karlsruhe , Germany, February 15, 2020. REUTERS/Kai Pfaffenbach 

One of twelve men suspected of involvement in a far-right group is escorted by police as he arrives for his hearing at Germany's general prosecutor in Karlsruhe , Germany, February 15, 2020. REUTERS/Kai Pfaffenbach 

One of twelve men suspected of involvement in a far-right group is escorted by police as he arrives for his hearing at Germany's general prosecutor in Karlsruhe, Germany, February 15, 2020. REUTERS/Kai Pfaffenbach 

One of twelve men suspected of involvement in a far-right group is escorted by police as he arrives for his hearing at Germany's general prosecutor in Karlsruhe, Germany, February 15, 2020. REUTERS/Kai Pfaffenbach 

German special police convoy escorts Stephan B., suspected of killing two people in a shooting in Halle October 9, 2019, as he arrives prior to a hearing at the Federal Court in Karlsruhe, Germany, October 10, 2019. REUTERS/Ralph Orlowski 

German special police escorts Stephan B., suspected of killing two people in a shooting in Halle October 9, 2019, as he arrives in a helicopter prior to a hearing at the Federal Court in Karlsruhe, Germany, October 10, 2019. REUTERS/Ralph Orlowski 

German special police escorts Stephan B., suspected of killing two people in a shooting in Halle October 9, 2019, as he arrives in a helicopter prior to a hearing at the Federal Court in Karlsruhe, Germany, October 10, 2019. REUTERS/Ralph Orlowski 

German special police escorts Stephan B., suspected of killing two people in a shooting in Halle October 9, 2019, as he arrives prior to a hearing at the Federal Court in Karlsruhe, Germany, October 10, 2019. REUTERS/Ralph Orlowski 

German special police escorts Stephan B., suspected of killing two people in a shooting in Halle October 9, 2019, as he arrives in a helicopter prior to a hearing at the Federal Court in Karlsruhe, Germany, October 10, 2019. REUTERS/Ralph Orlowski 

German special police escorts Stephan B., suspected of killing two people in a shooting in Halle October 9, 2019, as he arrives prior to a hearing at the Federal Court in Karlsruhe, Germany, October 10, 2019. REUTERS/Ralph Orlowski 

German special police escorts Stephan B., suspected of killing two people in a shooting in Halle October 9, 2019, as he arrives prior to a hearing at the Federal Court in Karlsruhe, Germany, October 10, 2019. REUTERS/Ralph Orlowski 

German special police escorts Stephan B., suspected of killing two people in a shooting in Halle October 9, 2019, as he arrives prior to a hearing at the Federal Court in Karlsruhe, Germany, October 10, 2019. REUTERS/Ralph Orlowski 

German special police escorts Stephan B., suspected of killing two people in a shooting in Halle October 9, 2019, as he arrives prior to a hearing at the Federal Court in Karlsruhe, Germany, October 10, 2019. REUTERS/Ralph Orlowski 

Men suspected of forming a far-right militant organisation in Chemnitz, are escorted by special police in front of the General Prosecutor's Office at the German Federal Supreme Court (Bundesgerichtshof) in Karlsruhe, Germany October 1, 2018. REUTERS/Vincent Kessler 

Men suspected of forming a far-right militant organisation in Chemnitz, are escorted by special police in front of the General Prosecutor's Office at the German Federal Supreme Court (Bundesgerichtshof) in Karlsruhe, Germany October 1, 2018. REUTERS/Vincent Kessler 

Men suspected of forming a far-right militant organisation in Chemnitz, are escorted by special police in front of the General Prosecutor's Office at the German Federal Supreme Court (Bundesgerichtshof) in Karlsruhe, Germany October 1, 2018. REUTERS/Vincent Kessler 

Men suspected of forming a far-right militant organisation in Chemnitz, are escorted by special police in front of the General Prosecutor's Office at the German Federal Supreme Court (Bundesgerichtshof) in Karlsruhe, Germany October 1, 2018. REUTERS/Vincent Kessler 

Men suspected of forming a far-right militant organisation in Chemnitz, are escorted by special police in front of the General Prosecutor's Office at the German Federal Supreme Court (Bundesgerichtshof) in Karlsruhe, Germany October 1, 2018. REUTERS/Vincent Kessler 

Men suspected of forming a far-right militant organisation in Chemnitz, are escorted by special police in front of the General Prosecutor's Office at the German Federal Supreme Court (Bundesgerichtshof) in Karlsruhe, Germany October 1, 2018. REUTERS/Vincent Kessler 

A Russian man suspected of planning an attack with explosives after turning to radical Islam is escorted by special police towards a helicopter after leaving the General Prosecutor's Office at the German Federal Supreme Court (Bundesgerichtshof) in Karlsruhe, Germany August 23, 2018. REUTERS/Vincent Kessler 

A Russian man suspected of planning an attack with explosives after turning to radical Islam is escorted by special police towards a helicopter after leaving the General Prosecutor's Office at the German Federal Supreme Court (Bundesgerichtshof) in Karlsruhe, Germany August 23, 2018. REUTERS/Vincent Kessler 

A Russian man suspected of planning an attack with explosives after turning to radical Islam is escorted by special police towards a helicopter after leaving the General Prosecutor's Office at the German Federal Supreme Court (Bundesgerichtshof) in Karlsruhe, Germany August 23, 2018. REUTERS/Vincent Kessler 

A Russian man suspected of planning an attack with explosives after turning to radical Islam is escorted by special police towards a helicopter after leaving the General Prosecutor's Office at the German Federal Supreme Court (Bundesgerichtshof) in Karlsruhe, Germany August 23, 2018. REUTERS/Vincent Kessler 

A Russian man suspected of planning an attack with explosives after turning to radical Islam is escorted by special police in front of the General Prosecutor's Office at the German Federal Supreme Court (Bundesgerichtshof) in Karlsruhe, Germany August 23, 2018. REUTERS/Vincent Kessler 

A Russian man suspected of planning an attack with explosives after turning to radical Islam is escorted by special police in front of the General Prosecutor's Office at the German Federal Supreme Court (Bundesgerichtshof) in Karlsruhe, Germany August 23, 2018. REUTERS/Vincent Kessler 

The sign of the German Federal Supreme Court Bundesgerichtshof is pictured in Karlsruhe, Germany August 23, 2018. REUTERS/Vincent Kessler