My husband is racist and it's driving me insane

When I first got with my husband he would make the odd racial joke, I use to roll my eyes cus I'm so against racism, but it never really got to me that bad.

Since Christmas (and since he made a new friend that he's since fell out with) his racism has gone 10x worse.

We have an 11 week old and he is constantly saying shit in the house using disgusting racial terms about a multitude of races. I always tell him to stop and that he can't be like that around our son and he agrees but then is straight back to it.

We were watching a movie and he turned it off when there was an interracial couple. He gives dirty looks to interracial couples when we go out and it's so fucking embarrassing.

I'm not even joking he has reduced me to tears sometimes with what he says and does.

I can't deal with it. What do I say to him?