Was the racist's rant aimed at only blacks or was it Hispanics too?
Definitely it was both.
Remember if it was aimed at blacks only, he would have called his friend a *beep* lover." But he didn't.
Yes the monkey rant was aimed at Fresh.
But "zoo" is a racist term for any non-white, because non-whites have historically been seen as unhuman savages who can't behave civilized.
I studied the scene and it seems to make sense. Why would Perez be his partner? Simple, Visigoths (all your -ez surnames) are white. They're not Spanish. He even is a white guy pretty much. Not a racist, but a white.
Chuckie was most likely a Delgado though. Though his last name, along with his buddies are never actually specified.