"I think it's pretty clear that the Comey firing is the moment that the US slides into authoritarianism."
 Oh, absolutely - clear as mud. Trump's action is completely within his scope. Can you imagine such a thing?

"The Trump supporters are "low information voters" who are simply abysmally ignorant"

Quite ironic. Judging from your input you may need to do a bit of research before feebly attempting to claim the "ignorance" of others. . 

Ignorance breeds monsters to fill up all the vacancies of the soul that are unoccupied by the verities of knowledge."
HORACE MANN