Crazy cover from the hippy era

The red-eye blue-skin brute aliens seem really to be under some peculiar influence. Is it an anti-drug poster? Nope, it’s a genuine vintage comics cover, art by Thomas Byrd, 1972. The era of hippies, the Vietnam War, and the Cold War. Considering that comics always reflected the real world problems, make your pick what they wanted to say by this one. Soviet invasion? The war in Vietnam? Cops vs. hippies? Let me know if you know more about this comics