A protester holds up a photograph of Rubén Espinosa, who was killed after he fled Veracruz state. Mexico is one of the most dangerous countries for journalists. (Reuters/Henry Romero)
A protester holds up a photograph of Rubén Espinosa, a journalist who was killed after he fled Veracruz state. Hundreds of journalists, writers, and artists have signed on to a letter calling on the Mexican government to end the cycle of violence in Mexico. (Reuters/Henry Romero)

The murder of Mexican photographer Espinosa has touched a nerve