Maybe to counter these thoughts you could look up whites who participated in countering the apartheid in the south or those who marched alongside blacks for equality.

An example that is mentioned a lot in documentaries and textbooks is two Jewish white brothers and a black man who were lynched after days of sitting wherever they wanted... all of them in the white section, all of them in the black section. Either way they did it they arose anger from the racists that had been in the south.

Believe me, racism DOES exist. However, it seems like your thoughts are obsessive. My aunt moved to North Carolina and she visited Charlotte, SC and some people expected her to get off the sidewalk when they walked by! It's disgusting. But remember that racism is idealized by a minority and that most white people are not racist.