Conversation so far:
Where did Victor Jara go to school
After joining the choir at the University of Chile in Santiago, Victor Jara was convinced by a choir-mate to pursue a career in theater.
what kind of activism did Victor Jara do?
Early in his recording career, Victor Jara showed a knack for antagonizing conservative Chileans
when did Victor Jara join the communist party
After visits to Cuba and the Soviet Union in the early 1960s, Victor Jara had joined the Communist Party.

Question: How long was he a communist?
Self-contained rewrite: How long was Victor Jara a communist?