Looks to me like the riots are being done by 14-21 year olds.  So not sure that the pas 5 decades have much impact on them.  That age group is more impacted by the narrative of free stuff, climate change will kill the planet in 12 yrs and Trump is an idiot racist.  I think the flame that set off the candle was forced quarantine which is very hard for young people who are all geared toward peer group and escaping their families.  And let's not forget the promise of money to an unskilled workforce.  We know some at least were promised money.