It’s clear that leftists like this kid want Trump to be president. They’re not really trying to prevent him from being president – they’re protesting and opposing him as if he were already president. Even when leftism is dominant, like it is now, it’s not comfortable with actually being in charge. It’s only really comfortable in opposing oppressive authority figures and being in a permanent revolutionary mode. Trump is sort of a pop culture caricature of such an oppressive authority figure, and he’s even sort of indulging them and playing the part in a campy way, which excites these people even more. They want Trump, they need Trump as president since it confirms their worldview and gives meaning to their lives as revolutionaries fighting unjust, oppressive authorities. It’s just not the same with Obama or leftists in charge, which ultimately only leads to cognitive dissonance and disillusionment.

(http://www.autoadmit.com/thread.php?thread_id=3165868&forum_id=2#30064698)