I've had lots of non-white and female players in my games - not since the '70s though. I only started in the mid '80s.Also, I've had non-white players in my game off and on since the late 70s. I had and have women in my game.
They, too, have said "Fuck it, it's just a game".
And my Orcs are manifesations of the Jungian "Other", and as such are our fears and hatreds given form. Can't say what your orcs are.