My 2nd Cousin Murdered His Entire Family

Have a 2nd cousin that murdered his siblings and parents for insurance money. He didn’t get away with it but only spent around 20 years in prison. He’s out now, but no one talks about him or will speak to him. The only reason I even know is my parents warned me if he ever reaches out to me that I shouldn’t talk to him. I managed to find out about him and what happened by googling him.