Arnoldo Martínez Verdugo
A long-standing leader of the Mexican Communist Party and the Unified Socialist Party of Mexico ( PSUM ) , Martínez promoted political self-criticism , refused to support regional guerrilla movements , condemned the Soviet invasion of Czechoslovakia and promoted the unification of the political left . 
<triplet> Mexican Communist Party <subj> Unified Socialist Party of Mexico <obj> followed by <triplet> Unified Socialist Party of Mexico <subj> Mexican Communist Party <obj> follows