Alton Sterling, 37, was shot and killed by police officers on Tuesday, July 5, while he was selling CDs outside of a convenience store. The following day, Philando Castile, 32, was shot and killed by a police officer after he was stopped for a broken tail light. Videos of both killings were widely shared on social media, causing hundreds to take to the streets in protest of police actions, as well as memory of the two men killed. Thursday night, snipers shot and killed five officers at such a protest in Dallas, Texas. Questions of police brutality, America’s historic racism, the Black Lives Matter movement, and second amendment rights have been pushed to the forefront of the nation’s consciousness.