WASHINGTON –  Spread across the floor of a room Monday evening was a hand-designed banner that read “U.S. puts the guns, Mexico puts the dead.” It implied that American-made guns contribute to the thousands of murders committed by drug cartels...

A large black-and-white picture of Jorge Alvarez Nava, a 19 year old and one the 43 missing students from Ayotzinapa, hangs from a wall. Strewn atop the picture, written in bold red letters is, “¡Vivos se lo llevaron! ¡Vivos lo queremos!” (Alive...

Forty-three empty metallic chairs glisten in the sun. Sitting in each chair is a fluttering black and white picture, one for each of the 43 missing students from Ayotzinapa, Guerrero. “Forty-three chairs, 43 people and 43 biographies. So...