Which one is guilty of assault?

[BmorePat87]

Does the building security have to identify themselves when he refers to them as the security as soon as they walk in?

I doubt he'll be able to justify attacking this man who was just doing his job. He went beyond "self defense". A quick google only defines self defense in Ohio in the cases of defending yourself from death or great bodily harm in your residence, work, or vehicle.

All also mention the duty to retreat. He could have retreated after that first punch but then runs at the man and just starts pummeling him like a lunatic.

This isn't anywhere cloSe to self defense