how do i deal with bastards who think this

Hey my ancestors were Irish and Italian, but according to the kids these days, they were White supremacists. 🙄

Ignore them. They don't know who you are, so their opinion on the matter is irrelevant.

Don't take is seriously. Because people will find other things to gripe about. It's a no win. Brush em off, I'm sure you're adult enough and smart enough to do that 😁

Don't know if this will help, but my mindset is--how people treat me is their business; how I react to it is mine. Best wishes to you, sir.

I didn't know prejudice for caucasian british of italian descent was a thing?

Seriously - some of my best friends are caucasian british of italian descent!

I'm sorry there are dim wits that give you a hard time - but these days, it really seems that every one is belittled for one thing or another.

As others have said, you can't control the ding bats in your life, but you can control you and your response.

I wish you good luck with that.

Decide not to get angry?
It’s not as though you’re going to change your mind on how you feel about this, but you can change how you respond.