Indigenous people hold posters with a photograph of slain environmental rights activist Berta Caceres while sitting in front of riot policemen during a protest to demand justice in Tegucigalpa, Honduras, on March 17, 2016.

Indigenous people hold posters with a photograph of slain environmental rights activist Berta Caceres while sitting in front of riot policemen during a protest to demand justice in Tegucigalpa, Honduras, on March 17, 2016. 

© 2016 Reuters