A man walks into an elementary school with two handguns. Within minutes, more than thirty children are dead or wounded. This isn't Newtown, Connecticut, but Realengo, a neighborhood in Rio de Janeiro, Brazil. On April 7th, 2011, Wellington Oliveira murdered twelve children and wounded twenty others. The tragedy sparked a national conversation on gun violence, a huge problem in Brazil. On Wednesday, in reaction to a different massacre, President Obama proposed a series... (GunPolicy.org)