Been one of the more frustrating aspects of modern politics. Talking to people about what is happening, and getting told again and again that I'm exaggerating, don't be ridiculous!
And then it happens, the warning comes true. And they just never acknowledge it. They refuse to acknowledge it. Again and again and again.
And every time you bring anything up, they have the same refrain, don't exaggerate, don't be ridiculous.
If they thought about it, It'd hurt their heads. And if they acknowledged it, it would be admitting they were wrong. . and possibly even worse, admitting to playing a part in the bad thing that happened.
And we cant fucking have that happen, now can we? Why be an adult, admit a wrong, and grow as a person, when you can be an obstinant bag of dicks with your fingers in your ears going "LALALALALALALA"
When you call the fascists what they are, it gives them an opening to derail the conversation trying to quibble over the definition of "fascism."
Sometimes it's worth debunking their No True Scotsman fallacies, but other times you accept their "alt right" euphemistic synonym because it's more important to preemptively minimize their trolling opportunities.
Tldr: alt-right is a way to pretend this is a new political trend that has appeared in the US.
In fact, it is neo-fascism, i.e. a well known political trend that is built on the refusal of parliamentarian, pluralism and the rule of law. Their aim is a régime change to establish a violent government that would oppress anyone who stands against them.