When I was a poor student in Boston, I got a job as a waiter and then several jobs as a bartender.
The only racism I ever saw was from groups of blacks, of any class, none of whom would tip.
I knew this, but provided great serve to anyone, but other waiters would do anything to avoid waiting on tables with blacks.
So, yes, there is some racism going on. But it’s because of certain social behaviors of groups.
Any remember the ethnicity of the folks in McDonald’s legendary “no tipping” ad?