Cop Savagely Beats a Young Man for Telling him to "Shut Up"

In this video a young man is sitting in his car when he tells the police officer asking him questions to "shut up." What happens next is a cookie cutter case of power trip brutality caused by the cop escalating violence to unneeded levels. The man was not resisting in the least, yet this cop proceeds to pummel him with his night stick and then pepper sprays him.

It is unclear what exactly caused the cop to detain this individual but it is not at all unclear as to who escalated the situation to violence.