"...that would be cowardly..."
If they attack my prized possession, my expensive car, with pounding fists, you bet they are in line for some physical retribution. Besides I carry, and never afraid to respond if attacked first. May be it is my warrior caste blood. My ancestors go back 7 generations military.
As I explained in previous posts, I would not hit the drunk with a mighty blow to his head using my fist. First, it risks severe injury to my right hand which is very vital part of the body. Second, it could cause concussion of brain of the drunk person. A kick to the butt is safe and effective for both.