Legal Advice

Got a call from the hospital at midnight saying my son had been brought in by ambulance with serious injuries from a beating at a bar. I'm still trying piece the story together, but according to one witness my kid had too much to drink and caused some kind of disturbance inside. The bar owner approached to eject him and sonny elbowed the guy. The owner, a bigger man, took him outside and smashed his face into the concrete and the proceeded to kick him repeatedly in the face. My son was too drunk to fight with anyone or offer any resistance. The result: a fractured eye socket, cheekbone smashed to pieces, stitches and bruises. The hospital said a plastic surgeon may have to put a plate in his face if the multiple facial fractures don't heal properly.

My question is can the owner of an establishment legally serve customers until they're leglessly drunk and then take them outside and beat them to a bloody pulp? Any advice? I'm clueless on this one.