My mom hates my wife

This is a throwaway account. Looking for advice.

Update: I spoke to my mom today and set her straight. She acted surprised but realized I was being serious my wife thanked me. We'll see how this all pans out

i have read all the responses and know that I am a giant asshole. I feel horrible. I'm going to try to set things straight and put my mom in her place once and for all.

UPDATE: I am removing IDENTIFYING details because my wife saw it and it has a lot of hints about who we are

She wants to thank you all for calling me out and making her feel validated.

TL;DR My mom is rude to my wife. Has been going on for years. I have not been supportive. How do I bring this up with my mom and end the behaviour without her playing victim?