And hoodlum behavior is only going to be a problem until the owners get to deploy automated, armored, mobile area denial systems, using microwaves, lasers, infra-sound, or whatever. When this happens, they will not even need to bullshit us with the excuse "We are doing this because of minimum wages". Seriously, guys. If you were not doing it now with a $35K robot instead of a $15 minwage peon, you were going to do it five years from now with a $10K robot instead of a $5 minwage peon.
There is no way around it. A number of low skilled jobs will get replaced with a few medium skilled ones (designing, building and maintaining the robots) and a few low skilled ones (running them and dealing with extreme deviation customers)
As for society as a whole, it will either will have to focus on providing comfortable lifestyles for those who are superfluous, or decide that they are no worth bothering with, and tune the laws so that they are easy to put out of sight. And if you think that have-nots will small arms will scare violence professionals and engineers unfettered by laws, you are an idiot.
Last year, I did not give a fuck, as both me and my wife think we are going to be useful or wealthy for long enough (MIT grads, six digit jobs, comfortable, paid for home, etc...) Six days before my 50th birthday, my daughter was born, and now we are ecstatic, but scared shitless.
All of a sudden, "Fuck everyone, I got mine" is not longer a sound policy. Now I have to worry, should I try to guide her to Lego Technics or bogu and bokken... and for the first time in my life I feel that maybe I should have focused harder on making money instead of enjoying what I do for a living.