“The crowd should have beat these cretins to a pulp.”
With 9 versus 3, if 2 join it makes it 9 versus 5. Unfortunately, in such a case, the non-normal people are more likely to join in. Businesses need to realize if they don’t provide sufficient security then the normal people will stay home and they will go out of business.
Lawsuits can help them come to their $enses.
PS - Take down those "gun free zone" signs.