He was not "defending his wife." That implies she was in physical danger. He was hurt for his wife's emotional pain and responded with physical violence against the person who said hurtful words. Again, if you want the world to work that way, great. I think we can do better.
I fell in love with a man who physically confronted people that offended me. That man ended up assaulting me, too. It seems great at first, but it’s not.
Meanwhile, sedition rules in this country.
Go figure.