Why these days everyone you don't agree with is "fascist" or "rasist"?

I got a feeling that the terms "rasist" and "fascist" have become way too standarised and a common practise in an argument is called your interlocutor with one of these terms, when you run out of arguements. Well, it makes me pretty mad as fascism and rasism are real problems and such practises make them sound like a joke.

Why these days everyone you don't agree with is "fascist" or "rasist"?
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