Desperation

He grabbed the offender and lifted him high up in the air.

The man was so shocked and there was nothing he could have done to preempt the attack since no one saw it coming.

Bruno then shook him like a ragdoll.

Those nearby could hear his teeth chatter, the shaking was so rough the man and the man was struggling to get loose.

His feet dangling in mid air, his cries of, "help me" went ignored as his audience stood rooted in either fear or shock.

Bruno then dropped him to the ground and Zyra winced because she felt he probably broke the man's spinal cord at that point but Bruno wasn't done yet.

He picked up the man by the neck this time with one hand, by then all the fight had gone out of the man.

Then Bruno lowered the poor man at an angle where he could easily snap his neck in one swift move.

The man never stood a fair chance against Bruno.