Complex sentence: The homophile movement lobbied to establish a prominent influence in political systems of social acceptability; radicals of the 1970s would later disparage the homophile groups for being assimilationist.
Split into simpler sentences: The homophile movement lobbied to establish a prominent influence in political systems of social acceptability. Radicals of the 1970s would later disparage the homophile groups for being assimilationist.