<human>: I know some of you will probably think that I shouldn't be worried about this yet, but I want to have a response prepared in case I'm faced with this interaction.

I rarely ever talk to or see my brother, even though he works nearby where I live. He doesn't know that I'm pregnant and I know my mother is going to tell him, which is no big deal. I feel like there is a 50/50 chance that he will want to play the role of uncle when the time comes. However, he is racist, sexist and homophobic. Actually, he takes these to such extremes that I feel like others with similar, hateful, beliefs would tell him to chill out! He often (in complete seriousness) talks about how the US should commit genocide to most of South America, Africa...pretty much any place that isn't the US. I could go on, but I think it's already pretty clear what type of person he is.

I don't want my child around that hate, but my brother thinks it is American pride. His clothing and truck are covered in confederate flags and sayings like, "We speak English here!" He is a walking, talking stereotype. 

Just...how...do I deal with someone like this, tactfully?

Can you succinctly summarize the text in 1-3 sentences?
<bot>: I'm pregnant, my brother is racist/sexist/homophobic, how do I explain to him that I don't want that influence around my child?