The assassination received worldwide attention with tributes and memorials for Cox being made with condemnation of Mair . A personal friend , Canadian MP Nathan Cullen paid tribute to Cox in the House of Commons of Canada . Canadian Prime Minister Justin Trudeau , former US Secretary of State Hillary Clinton , the then US Secretary of State John Kerry and former US Representative Gabrielle Giffords , who was wounded in an assassination attempt in 2011 , were among international politicians who sent messages of condemnation and sympathy in the aftermath of her killing . Cox 's husband issued a statement urging people to " fight against the hatred that killed her "
assassination attempt in 2011
2011 Tucson shooting
Jo Cox