The parents of Michael Brown, a Missouri teen killed by police, testified before a U.N. committee Tuesday because they want the world to know "what's going on in Ferguson."

Lesley McSpadden and Michael Brown Sr. spoke to the United Nations Committee Against Torture — which also works against cruel or degrading treatment or punishment by government authorities. "We need the world to know what's going on in Ferguson and we need justice," McSpadden told CNN in Geneva, Switzerland.