A comic that pushed the envelope during it's time, but gets largely overlooked by today's fans was the Sabre ongoing from the 80's. Written by Don McGregor with art by Paul Gulacy, Billy Graham, and Jose Ortiz, Sabre was set in the near future and told the story of a starry eyed adventurer fighting against an oppressive establishment.
It contained not only an interracial romance, but also a kinda graphic birth scene and possibly one of the first ( if not the first) on panel kiss between gay men.
Plus the hero sorta looks like Jimi Hendrix