Trump himself rejects the "democratic process".  That was his appeal to people with legitimate grievances against the owners and operators of an economy rigged to impoverish the many for the enrichment of the few and to people with illegitimate hatreds and fears of other people.
Why wouldn't young people protest Trumps' election when their futures can be irreversibly harmed by the possibility that Trump will actually attempt to do what he promised to the gullible tools who voted for him.  I don't think there's much chance of it, frankly.  Trump is a greed ridden monster who won't make a move if it would adversely affect his own financial fortunes.