I need help dealing with my aunt

I haven't seen my aunt in a few years, but it appears I will see her this holiday season. I need some help to put this issue to bed.

Every 6 months she hits me or my brother up on social media asking why we don't talk to her son anymore. I typically just ignore it and don't respond. The other day she posted an article on her page about "Why cousins need each other."

She knows the truth, but continues to bother us. Her son is crazy. He has 3 baby mommas and doesn't pay child support. He has been arrested numerous times for stupid crap. I have another cousin that let him borrow money to get a car and my cousin left town with it and it got repoed after he got a DUI.

About 10 years ago he was 25 and living with his mom, step-dad, and sister. His family went out of town for Christmas and he stayed behind. They came back to a wrecked house. He threw a party with his sister's high school friends and it got out of hand. They put him on a bus the next day back to his hometown with no job, car, or place to live once he got there. I was living in my hometown at the time along with many other relatives. He drove us crazy for 2 years with death threats and just being a nuisance.

I finally cut off all contact with him 6 years ago after he made some racist comments on one of my friends' Facebook page. He doesn't even know them.