Was Michael Jackson a Victim of police brutality?

No, he was not

Yes and no. In the lyrics of his song "They Don't Care About Us," he refers to being a victim of police brutality-- he has explained that when he was arrested and accused of child molestation, the police handled him roughly and dislocated his shoulder during the arrest; they also treated him like they believed he was guilty. But for the most part, the police protected him over the years, and he seemed to get along with them -- he was a big celebrity and a popular star, and it does not seem that his relationship with law enforcement was always adversarial.