They're Bolsheviks.  Trump's election revealed exactly what the Progs were all about.  "Another Commenter for Hire" and "907AK" appear to be part of David Brock's "Shareblue". An electronic army whose job is to spread pre-ordained negative themes, for example:

Trump is authoritarian and a thief.Trump is under the influence of Vladimir Putin.Trump is a weak and quick-tempered personality, he’s a manic-depressive.Trump was not elected by the majority of US citizens, and is therefore illegitimate.Vice-President, Mike Pence, is a fascist.Trump is a billionaire who will constantly be faced with conflicts of interest between his personal affairs and those of state. Trump is a puppet of the Koch brothers, who are famous for sponsoring the extreme right.Trump is a white supremacist and a threat to minorities. To save democracy, let’s support the democrataic parliamentarians who are attacking Trump, and let’s demolish those who are co-operating with him.