re: Check out this video of UGA student getting arrested

I'd like to know what the protocol is for this type of situation. What are the facts of this case?

A business calls the police due to that individual loitering. They want him off their property.

The police come, identify the suspect and warn him to leave the property.

The suspect refuses, so the police officer sprays him with pepper spray.

The suspect leaves the property.

The police officer (following numerous commands to stop) pursues the suspect off the property.

The suspect refused to stop or submit to the police officer.

The officer strikes the suspect's head x times and commands him to lay down with his hands behind his back.

The suspect sits down (obviously disoriented).

The officer strikes the suspect again and clarifies his command.

The suspect complies.

The officer cuffs the suspect (custody is established).

Can you see where enforcement of this simple ordinance went too far?