People sometimes cheat, not okay, but it happens. Most likely the marriage wasn’t going so well, and he got some attention he wanted from someone else. Your mother is hurt and angry. But she does not have the right to deny your continued contact and bond with your dad.

There is no good reason mentioned in your post to end your relationship with your dad to end.

However, how the divorce is handled is more important in my opinion. If he in some major way makes sure she gets a bad unfair deal, then things are different. If he not only cheats, but also does not share in a fair manner, then he is really hurting your mother in a way that is harder to accept.

Most importantly, consenting adults. She is not even just barely an adult anymore. Not letting a 30 year old woman decide for herself is infantilizing.

Have fun and enjoy yourselves!

To not support USA financially

I am cishet white male, so I am probably ignorant. In my opinion you have no bigger obligation to be an activist than me.

However, I do believe all people have a certain obligation to participate unless the cost is too severe.

If you are neutral in situations of injustice, you have chosen the side of the oppressor. If an elephant has its foot on the tail of a mouse and you say that you are neutral, the mouse will not appreciate your neutrality.

• Desmond Tutu

I have a lower cost of participating due to my privileges, so I do. If you consider it probable that you will get significant consequences for activism, then it’s just judgement call only you and your family can make.