Cartoonist Martin Rowson is seen reflected in a mirror as he poses for a photograph at his home in south London January 8, 2015. Many European newspapers republished cartoons from the French satirical weekly Charlie Hebdo to protest against killings by Islamist militants seen as an attack on freedom of expression and the continent's tradition of visual satire.The editorial stances highlighted differences over how publishers respond to the shootings and raised questions over whether many were already self-censoring for fear of causing offence or, worse still, triggering an Islamist backlash. "If you start saying 'well we've got to censor ourselves because we might upset murderers or potential murderers' then we might as well just close down the media," Rowson, a cartoonist for Britain's Guardian newspaper, told Reuters. REUTERS/Stefan Wermuth (BRITAIN - Tags: POLITICS CRIME LAW MEDIA TPX IMAGES OF THE DAY PORTRAIT)