I give it up to youth.    Notice most are male.    With men, it always comes down to a match of power.   These are young people with virtually no social position or influence.  So what do they do, they act like criminal idiots in their own show of testosterone fueled rage.  It gives them a sense of power.  My generation spent a lot of time thumbing our noses at authority as wel - probably every generation does.   Most will grow out of it.

None of that excuses stupid, criminal behavior.   I'm fine if some get identified and any have to pay for the crime.

Blue collar young males aren't much better, they prefer fighting behind the bar, jumping off balconies and both have problems with sexual assault on young women, etc.....     

 I'm NOT saying a majority of either group has this little self control, but it's a function of age and gender, not politics.   College kids, in a college town, it's not surprising it happens over politics.  Just an opinion.  It would be soccer in England.