You're predicting their behavior based on the melanin content of their skin?
Their statements were different ... so would you believe them? If so, which one to believe? Why discredit one and accept another. If the statements would have been consistent then maybe they're more believable. And again, why did none of the witnesses mention Brown entangled with Wilson in the police car?
Second, I am suggesting that based on skin color they may be less believable since they do account for a large disproportionate amount of incarcerated men.
Last, as we know, many blacks still feel persecuted and that whitey is the cause ... so they want 'revenge'.