I read an article on Yahoo the other day about that. (Maybe you read the same one?)
Ever consider that the black man is caught and found guilty more often? This may account for some of the reasons why our prisons are so overly represented by the black population.
I just wanted to bring up that racism is still alive today. People who are ignorant to this think it was over in the 60's. Okay, so obviously racism today is mostly very subtle and most white people don't even realize it exists. White people don't realize this because they have what is called "white privilege." In other words, white people are treated "normal," they don't know any different.
People are afraid of the word, "racist" because they associate that with the KKK or people who do hate crimes. Racism exists today not because of those few people in those awful groups, but because of stereotypes. I am working to overcome this myself. For example, I am a younger white woman living in a large city and have mostly black neighbors. I found myself the other day holding my purse a little tighter when a large black man walked past when I was walking out to my car. Now, there were no outward signs that the man was dangerous. I saw that he was large and black and the stereotype automatically kicked into my subconscious. I remember thinking to myself after he passed and said a friendly 'hello,' "Why was I afraid of this man?" Obviously, it was only because he was a black male.
The only way these stereotypes can be beat is by each individual. For example, I am working to recognize in myself when I am having 'racist' (or 'stereotyped' if you prefer) thoughts towards another racial group (especially blacks in my case, given my demographics). After recognizing these impulsed thoughts, then act on them! I'm still working on that myself. It's much harder to break than I initially thought... but I have come a long way. :)
Anyway, you are right about whites being afraid of blacks.
White woman living in predominately black neighborhood... grew up in white middle-upper class suburbia.