My grandma is a racist!

My grandma, what to say about her…? Well, she is VERY racist. I cannot believe how bad it is! I’m not racist, I just hate jerks. But wow.. Is she ever!! Popeye went over to see some dogs at one of the campsites we were at. And she can’t see very well so I told her that he ran away to go see those dogs. She’s like.. Oh I love those little dogs, I’ll have to go see them later. And I said.. Well, they’re Mexican. I said that jokingly because she has said outrageous things in the past and I just wanted to see if she would say anything. And she did. She came back with, “Oh I didn’t know those people could have a motor home like that.” It was a big motor home so pretty much she was saying, I can’t believe Mexicans can afford a motor home like that. They probably stole it. I was shocked!!! I couldn’t believe that she would say anything like that and not have any problem with it!!! Then I said, Wow grandma, you’re really racist. Mexicans can be rich and famous and have normal jobs and afford motor homes.. And she’s like, well that’s the way I grew up. Only white people were good and black and Mexicans were not allowed to do anything. I just wanted to smack her and say, well the times are different so change your freaking mind old lady! You need to accept them. They are people too! They are just like us. So get over yourself.
Oh and she doesn’t like that I speak my mind and tell her the truth. But whatever. And I was just discussing with her that she always says it loud enough so that people can hear her. And one day, someone will come up and punch her. So I told her she better fix what she says or else I will let someone do that. She's like, well it's my trouble not yours. So I said, "Ok.. well I'll just back away then if anybody is gonna beat you up." She said ok. Also, She was eating her mixed nuts and called one of them "The N word" toes. But she actually said the word. I was like... WAIT! What did you say??!! and she's like, that's how I grew up and I don't have a problem with that!
It just amazes me how ignorant she is. The world is changing. She needs to change her perspective!