My son was verbally abusive

Six days ago, my younger son and I were talking about the Moon Train (Google it), and the oldest one came in and started talking about how the moon landing was a hoax.
Things escalated quickly. He was swearing at me F THIS F THAT F YOU ( politics) yelling, both boys are yelling at me now, and my 4 year old grandson says Grandma, I don't want you to leave! So I picked him up and said, "I love you!"
My son yells LOOK WHAT YOU F*****G MADE ME DO IN FRONT OF MY KID!!!!
So I said, "Fine, I won't come over anymore!!!"

I almost feel like he was on drugs. Other than weed.

Now he's trying to act like nothing happened. Sending memes on FB.
I'm not responding. This isn't the first time he's done this, but it's the worst yet.

My 22 year old daughter won't speak to me either (for a different reason), and the middle son hasn't reached out.

I really don't like any of them right now.

I don't know how long I'll go without speaking to my son's. My daughter won't budge.
She said;
There's a lot to forgive and move past and I'm very busy."
I forced her off my phone plan due to over spending.

Wtf.....

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