The daughters of slain Honduran environmental and indigenous rights activist Berta Cáceres talk about their struggle to bring their mother's killers to justice.
More than 65 percent of the murders tallied by Global Witness in 2015 occurred in Latin America.
Four people were arrested in Honduras Monday over the murder of a high-profile indigenous activist earlier this year, officials said.
Mourners broke into protest Friday at a memorial service for slain Honduran indigenous activist Berta Cáceres, a renowned environmentalist whose family has labeled her killing an assassination.
When Cáceres won the 2015 Goldman Award for environmental activism, for leading the indigenous Lenca people in a struggle against a massive hydroelectric dam, the organization commended her for carrying on her campaign despite death threats.