A woman wearing a protective mask holds a banner as people protest after being unable to find medications for their cancer treatment due to a shortage of medicines during a visit of Mexico's president Andres Manuel Lopez Obrador (AMLO) at Mexican state oil firm Pemex's Cadereyta refinery in Cadereyta, on the outskirts of Monterrey, Mexico August 27, 2020. The banner reads "Give me back what you took from me". REUTERS/Daniel Becerril