You ask good questions. Here’s another question that should be asked as you contemplate a dangerous situation in a split second.
“Should I risk going to jail and ruining my life if I get involved?”
As usual, your comments are completely irrelevant to the incident/event.
If you were being assaulted would you defend yourself?
In this particular case, if reports are correct and his wife and daughter were accosted, you betcha! All in.
Non family, would depend on the degree of injury threatened or received. If life or limb threatening, yes, I would risk jail to do what is right.
Self defense of one's self or another is just.
“Should I risk going to jail and ruining my life if I get involved?”
Great question. If it didn’t involve someone I love, I may walk away. Not worth it.