Seattle WTO Protests and Today's of Trump

I wonder at the background of the protestors in DC today, the ones who destroyed some windows.  Were they perhaps the children, actual or ideological, of the WTO protestors of 17 years ago in Seattle?  And how do they relate to Trump's inaugural speech, which certainly was anti-global institutions and anti-elite? Or is it just the violent impulse present in all of us, using whatever materials are available to rage against the world, a world weighing too heavy on them?