Complex sentence: Since 2002, two thirds of the accounted murders of environmentalists around the world have occurred in Latin America, with more than 450 individuals killed between 2005-2014.
Split into simpler sentences: Since 2002, two thirds of the accounted murders of environmentalists around the world have occurred in Latin America. This region is known to be the most prominent area for these environmental killings with more than 450 individuals killed from 2005-2014.