OT, but my spergy take on elder generations racism is that they were “not racist” in the actively wanting harm or death on different skin coloreds sense.
They were merely mistrustful and suspicious of different coloreds due to cultural differences and unfamiliarity.
When other things like it appeared that other coloreds were getting preferential access to jobs or housing, had a different religions, various other differences, this just confirmed suspicions and increased mistrust or hostility.
What is frustrating today is the belief that any form of racist belief automatically equals Nazi and genocidal violence.
People need to get a grip and a sense of perspective.
To keep it on topic, Chris probably just parroted beliefs he had heard from Bob or Barb.
He is from a pretty white area and when most of the blacks he encountered were unpleasant to him from his self centered perspective, it would reinforce this belief.