Racism is part of the Human Condition... Human Nature.
The vast, vast majority of us marry within our own race.
The vast, vast majority of us live amongst our own race.
The vast, vast majority of us are more comfortable when interacting amongst our own race.
Why?
Because people of our own race look like each other...
Because people of our own race share the same ancestry...
Because people of our own race share the same long-term history...
Because people of our own race share the same macro-level culture...
Because people of our own race share the same macro-level religion and philosophy...
Because people of our own race share the same broad culinary traditions and even recipes...
There are a very large number of reasons why we prefer to live and breed amongst our own...
Oh, there are plenty of exceptions, mind you, but that is the way of the world... ten thousand years ago... or two thousand years ago... or today...
I, for example, am, at my core, more loyal to White Folk than I am Blacks or AmerIndian-Hispanics or Asians or Indo-Iranians and the like...
In any situation in which my own race requires defending or in any situation in which my own race is to be disadvantaged I will oppose such situations...
But that does not mean that I actively pursue policies or behaviors or speech that brings intentional harm or disadvantage to those of other races...
Basically, so long as I am not disadvantaged or harmed, it's live-and-let-live, with some considerable goodwill towards others who do not look like me...
I am racist... you are racist... every person blogging on this board... and every human being that ever lived... is "racist"...the condition is instinctive... nature...
The trick is, not to let that instinctive and eons-ancient bias serve to inform and prejudice our behaviors towards those of goodwill who do not look like us.