I get along with 95% of my extended family. However, there is one cousin that I cannot stand. I did not send him a save the date, and recently that side of the family contacted my mother to get his save the date "re-sent". They are using the wedding as a family vacation. I do not mind that portion, and want my other cousin, aunt and uncle to come. Just not him.
This side of our family lives almost 2,000 miles away, and therefore only have 4 memories of time spent with him. None of these are good, and all involve him getting completely wasted and being an absolute jerk. In addition to this, he is extremely racist and opinionated about it. This is what I am worried about most, particularly because fiance has close friends and relatives of different races.
My mother wants me to invite him. She is worried about causing a feud within the family. She has said that she will deal with him and I do not have to worry about it. But I know that my fiance and I will be worried the entire day that he's going to call someone an extremely racist name and start a fight.
I don't want to have to be worried about him hurting friends and family that I actually like, just to keep the peace. I adore my mother and do not want to cause problems between her and her brother, but I also don't want to be continuously worried on what should be the happiest day of my life.
How can I let them know that I really don't want him there without causing issues with my family?