Night of the Living Dead - Zombie Commies again!!

Like we saw in Invasion of the Body Snatchers, once again in Night of the Living dead we find ourselves dealing with a clearly lifeless, emotionless form of humans (un-dead humans but still in human physical form) that are clearly a major plague on society. Given the time of the film it could be argued that the zombies could represent any group, communists, hippies, racial minorities that could have been seen as a plague on society. I doubt they were making many racial connections given that the heroine of the film was a black man. Not to mention he was without question the smartest and most competent of the characters. That in itself is a statement about race and thus probably removes racism from any part of the Zombies meaning. They do however, remind me a lot of the Body snatchers and as a result remind me of communists or hippies. Two groups you could easily argue were causes of social unrest in the 1960's. I had no idea Horror films had potential for so much depth.