Since you and Ilixtze@lemmy.ml are making the same point, I'll just address you both here.
They have less/nothing to lose, but they also have less/nothing to gain. Violence is guaranteed to have violent consequences in our panopticon, anyone that decides to gun down a CEO will absolutely be caught 100% of the time and there's zero hope of getting away with it. In the past, someone could actually carry out a string of arsons or assassinations or bank robberies and maybe get away with it. Today, any act of violence will always be your last act of violence.
Which brings us to another problem: cynical atheism. Young people in the past could believe, if they died in righteous violence against their oppressor, that they'd be rewarded. Even atheists could believe that revolutionary suicide would result in something good after their martyrdom. Today you'd struggle to find anyone in the West who still believes in anything. Death is just the end.