Luz Maria Davila, whose son was killed in gang violence in Chihuahua state, holds a ticket to attend a mass led by Pope Francis in the state, February 11, 2016. (Reuters/Jose Luis Gonzalez)
Luz Maria Davila, whose son was killed in gang violence in Chihuahua state, holds a ticket to attend a mass led by Pope Francis in the state, February 11, 2016. (Reuters/Jose Luis Gonzalez)

Mexican journalist shot dead in Chihuahua