Marco Antonio Yon Sosa (7 September 1929 – May 18, 1970) was the leader of the Revolutionary Movement 13th November, a Guatemalan guerrilla organization.
Yon Sosa broke with the Stalinist Rebel Armed Forces in December 1964 over the question of a ceasefire, which he opposed.
[4] Gino Perente notes that Yon Sosa hadn't died in some act of revolutionary heroism at all, but in a drunken car accident in downtown Guatemala City.
[5] Yon participated in the November 13, 1960, military uprising against president Miguel Ydígoras.
Yon's father was a Chinese merchant,[6] and under his wing, MR-13 took on a decidedly Maoist orientation.