My mom is racist

My mom and I NEVER fight but we disagree on a few topics so we try to never talk about them. Lately though she’s been getting on my nerves.

Here’s the sitch: my husband is from Mexico and my mom is a Trump supporter. She doesn’t usually say racist things around my husband or I because she knows I’ll light that shit up real quick, however, my mom and my sister (also incredibly conservative) were saying that the Hispanic name “Jesus” was arrogant because naming a child after a god was child abuse (something about how it’s giving the child too much to live up to).

I said “that’s quite an ignorant and racist thing to say.” and the conversation continued onto how it’s OK for “those people” to bash on “us” but not for “us” to say anything about “them”.

Anyways, I debated my case very calmly and stayed on topic (I was a debater in high school and just finished a critical thinking course for my business bachelors), yet throughout the entire thing my mom kept saying things like “you’re being stupid”, “you have no base for that”, or “it doesn’t apply to you so why do you care”.

I got very heated but kept my head on straight because I know that acting like a child won’t solve it. It did stoop a little low and pointed out the flaws in her arguments like the ad hominem fallacy (attacking the person instead of the argument when she says “you’re being stupid”), appeal to irrelevant experience (her saying that “white girl wasted” is a slur), and then telling her to try again.

Anyways, now she’s not speaking to me, and I feel like the bad guy. Idk what to do.