What else should we do to people who wear those hats? Refuse to hire them? Refuse to bake them a cake, or sell them groceries? Cancel their Paypal account, or deny them banking services?

You just said that...

MAGA is support for Republican Policies.

if you believe wearing a MAGA hat is "threatening" and you believe in banning people that "threaten you" then you are saying you want to bann everyone that supports Republican Policies.

You can not say "I just want to bann people that wear MAGA Hats not republicans"...

Republicans where MAGA Hats and Support the President, Donald Trump