ch on ▁became ▁leader ▁of ▁the ▁CG T . ▁▁ 1 9 4 7 ▁to ▁ 1 9 9 0 s ▁: ▁The ▁dom ination ▁of ▁the ▁French ▁Commun ist ▁Party ▁ ▁Alliance ▁and ▁Union ▁of ▁the ▁Left ▁▁ ▁Although ▁the ▁CG T ▁was ▁dominant ▁in ▁French ▁trade ▁union ism , ▁it ▁was ▁isolated ▁until ▁ 1 9 6 6 . ▁At ▁this ▁moment , ▁it ▁chose ▁to ▁coordinate ▁its ▁actions ▁with ▁the ▁French ▁Democratic ▁Confeder ation ▁of ▁Labour ▁( Conf édération ▁française ▁dém ocrat ique ▁du ▁travail ▁or ▁CF DT ). ▁ ▁During ▁May ▁ 1 9 6 8 ▁in ▁France , ▁the ▁CG T ▁was ▁critic ized ▁by ▁the ▁far - left ▁because ▁its ▁leader ▁Georges ▁S ég uy ▁had ▁signed ▁the ▁Gren elle ▁agre ements ▁with ▁Prime ▁Minister ▁Georges ▁Pom pid ou , ▁it ▁was ▁assim il ated ▁as ▁a ▁bet ray al ▁of ▁the ▁revolution . ▁ ▁In ▁the ▁ 1 9 7 0 s , ▁it ▁supported ▁the ▁" Union ▁of ▁Left " ▁( al liance ▁between ▁the ▁French ▁Commun ist ▁Party ▁( PC F ), ▁Social ist ▁Party ▁( PS ) ▁and ▁Parti ▁Rad ical ▁de ▁G au che ▁( PR G )). ▁ ▁After ▁the ▁defeat ▁of ▁the ▁ 1 9 7 8 ▁legisl ative ▁election , ▁the ▁al liance ▁with ▁the ▁CF DT ▁( who ▁were ▁more ▁linked ▁with ▁the ▁Social ist ▁Party ▁and ▁turned ▁right ▁after ▁the ▁abandon ▁of ▁the ▁" aut og estion " ▁( self - rule ) ▁and ▁class ▁struggle )