Are Republicans fascist and what happened to the alt-right?

That is because their rhetoric is at odds with the principles needed

to underlay social freedoms and/or a democratic republic/nation

of laws and is instead a reach for a nation of loyalty to one ruling

figure.  Their method of seeking power is to control the vote while

their idea of ruling is not to take any input from the public but

to decide for them.  Thus while their rhetoric is about freedom

the principles they operate under are totalitarian.  If they succeed

in selling themselves the public will suddenly discover that they

have surrendered their freedoms and empowered a mob of lawless

suppressors.