And they march because Trump is a weakling. They should be crushed with military force.
Anyway, i must add that in my opinion ,the the pendulum does not oscillate between left and right( political views), between what it oscillates is between Eros and Thanatos, these are the two extremes between which each human being oscillates inwardly, and this individual inner struggle is projected onto society.
Thanatos and Eros,understood in the way that Greek myths defined them, not in the current superficial way of being summarized.
Plato, Rilke or Goethe explained it better than Freud, I think. But better even the original Greek myths themselves.