Photo of the Day: Taxi Signs Take Flight

A demonstrator throws a sign at military policemen during a protest against Sao Paulo State Governor Alckmin, in Sao Paulo

A demonstrator from the group called Black Bloc throws a taxi sign at military policemen during a protest against Sao Paulo State Governor Geraldo Alckmin, in Sao Paulo August 3, 2013. REUTERS/Nacho Doce (BRAZIL - Tags: CIVIL UNREST POLITICS TPX IMAGES OF THE DAY) - RTX1291WNacho Doce/Reuters

A demonstrator from the group called Black Bloc throws a taxi sign at military policemen during a protest against Sao Paulo State Governor Geraldo Alckmin, in Sao Paulo, Brazil.

Nacho Doce is a Reuters staffer based in Sao Paulo. He got his start in photojournalism working for El Mundo, one of the largest newspapers in Spain. See more of his work on the Reuters blog.

Our Photo of the Day pick highlights a moment of exceptionally strong photojournalism, culled from the daily output of wire photographers from around the world. We post a new photo every weekday—browse our past picks here.