How to deal with snobby relatives I can't avoid?

My aunts and their children always look down on my family because my mom doesn't have the money to be spoiling me and my 2 other sisters, and I don't expect her to. They're always talking about which new iphone they have, what car they just bought for their children, and what vacations they're going to go on.

What really bothers me is that my mom doesn't think anything of it and tells me to shrug it off because "they're family"

I've gotten to a point where I try to avoid every family gathering because I can't stand them and their children bragging about what they got or talking about other people and what they don't have. The problem is my mom doesn't get it and she gets mad at ME when I try to avoid them. How do I deal with these snobby people without making my mom angry?

Just say, "Pardon me, but I find the lot of you to be jolly well stupid and utterly repulsive! Have a wonderful day!"

I have dealt with this before. I listened to my mom's relatives talk sh't about us in our face, but i didn't say anything back cis "they're family", big mistake. You have to show them who they think they are messing with it. Don't worry about your mom, she will forgive you the next day. Take a stand. I had to live with my mom's relatives who were annoying as hLL. Say something not too harsh, but harsh enough that they get the point. Say something like" hey you do know i'm standing right here, at least ahve the courtesy to talk behind my back cus we're family. How do you expect your family to respect. "