Eh, I don't know if he necessarily has "problems", but here's what I think.
You get out of life what you put into it. Bruno said that in the show tonight. I agree. If you go into an everyday situation with preconcieved notions, chances are you will then assemble your experience to fit around that preconception.
Maybe he just hadn't yet been in a situation that could show him the true force of racism in society today. I think something will come along later in the show to illustrate that.