His parents were active Communists until 1956 , when they left the party after Khrushchev 's Secret Speech .
Greenblatt was born in Montreal in 1953 to a secular Jewish family .
Greenblatt 's parents were active Communists until 1956 , when they left the party after Khrushchev 's Secret Speech .
Greenblatt was born in Montreal in 1953 to a secular Jewish family .