The group Global Witness lists 32 countries in which environmentalists have been killed. Mexico has seen at least 40 activists murdered.

908 Brazilian Environmentalists Murdered

In 32 countries environmentalists have been murdered

https://www.globalwitness.org/reports/bloodtimber/?gclid=CIb_tf2LzMcCFYU

Mexico has had 40 environmentalists murdered in a few years' time

http://www.kcet.org/news/redefine/rewild/commentary/hundreds-of-environm

Santos Rodrigues murdered August 2015

http://www.dailymail.co.uk/wires/reuters/article-3212301/Police-investig

Why They Killed Chico Mendes

http://www.nytimes.com/1990/08/19/books/why-they-killed-chico-mendes.htm

Brazil's JBS is now the world's biggest cow butcher

http://www.slate.com/blogs/the_world_/2014/04/15/report_finds_908_enviro

http://www.washingtonpost.com/news/morning-mix/wp/2015/08/27/why-are-bra/

http://www.treehugger.com/sustainable-agriculture/eighth-amazon-activist

Shell pays 15.5 million settlement for its part in murder of Ken Saro-Wiwa, Nigerian environmental activist

http://www.theguardian.com/world/2009/jun/08/nigeria-usa

http://www.rain-tree.com/facts.htm#.VeB2afn4_bg

http://cdn.c.photoshelter.com/img-get/I0000hXGlxHwQOCA/s/750/001228-01.j

Dorothy Stang, Dayton Ohio nun, murdered

http://cdn.ipsnoticias.net/wp-content/uploads/101428-20120822.jpg