I can't speak for the people running our country, but in my experience liberals have shown no sign of wanting to kill anybody really. There are lunatics on all sides of the spectrum, but for the most part liberals I've met have seemed like normal, mostly sane people.
Guess you must totally miss the daily threats that liberals make online, or like the crazy old fart down the road from me with homemade signs that he randomly puts out that call for everything to deporting all Republicans to "killing the racists, bigots, elitists." Another signs says "All Republicans are racists, bigots, elitist." (Yes, the grammatically correct "S" from elitist is missing.)
The Nazis massacred their opposition, numerous times.
Lenin and Stalin did it.
Mao Zedong killed more then the above combined.
The communists around the world have been killing their opposition for the last 70 years.
Liberals seek total power, and that can only come if all opposition is silenced, and I don't mean just made to shut up. They must be eliminated.