Syngenta: GMOs, Pesticides and Violence http://www.mstbrazil.org/?q=node/642

Organization for Human Rights (http://terradedireitos.org.br/) published a case study on the various human rights violations by Syngenta Seeds, multinational agribusiness corporation which produces genetically modified seeds and pesticides. 

The actions that violate include murder, physical and moral violence against landless rural workers, maintenance of private armed militias, carrying out forced evictions without a court order, tampering with poisons, soil contamination with pesticides, contamination of agro-biodiversity with GM seeds, criminalization of social movements, among many other actions.