Back in the 1930s, the Government of Germany, with prodding by the National Socialists and the suspicious Reichstag fire, eliminated all the left-wing parties in Germany.
The government as a whole convinced the people that socialism and communism were a greater threat to democracy than fascism.
So when the July 1932 vote happened, the Nazis got the majority vote, and one of the main groups of people who voted for the Nazis (or who didn't actively oppose them) were the equivalent of centrist liberals today.
Now apply that to liberals in the USA today, and how history often repeats itself, and you can come to the irrefutable fact that liberals are fascist-enabling scum.
Whenever a liberal shrieks about Trump and how dangerous he and the transphobic, racist, antisemitic goons he inspired are, do not let them get away with it.
Let them know the only reason these scary and evil monsters rose to power was due to the inaction and enabling of liberals and the Democratic Party.
And if they try to deny it, just punch them in the nose as hard as you can, because fuck those guys.