>What other social issues should be solved with vigilante justice?

Everything you said is true, but I suspect, also irrelevant, because options short of vigilante justice aren't going to be seen by the public as viable for much longer (if they're even seen so now). America's social contract is breaking, and existing institutions make it clear, daily, that they will strengthen that trend rather than reverse it. And as JFK said, 'Those who make peaceful revolution impossible will make violent revolution inevitable.' That doesn't make the violence laudable, or even desirable. It is simply inevitable without seemingly impossible positive change from an establishment that is hostile to such.