"I am Sean Bell: Black Boys Speak"
This short documentary by Stacey Muhammad is really powerful and worth checking out. All of the people interviewed are clearly affected by police brutality, but the really moving parts are when the young boys (around age 10-13) are interviewed and describe how they feel about the Sean Bell shooting (Sean Bell was the young man shot 50 times by police the night before his wedding). It's about 10 minutes long. There are a few scenes depicting violence.