Why do people who support Trump assume someone is a commie or a leftist because they disagree with them?

I have noticed they complain a lot about echo chambering, but they are the ones who can not stand someone who has a different opinion from theirs.

They also create some fantasy in their mind that you are a commie or a leftist just because you say something they don't want to hear.

They create a delusional in their mind that I am, somehow, Biden's support because I dont agree with two-party systems.

Why do people who support Trump assume someone is a commie or a leftist because they disagree with them?
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