Embarrassing mother... Am I wrong?

According to your profile, your mother suffers from dementia, meaning you're not going to get through to her, one way or another. Old beliefs are in their heads like cement ANYWAY, even w/o dementia, so what's the point in yelling at her, since you're not going to change her mind? The carer is able to shrug off your mother's insensitivity, so you should be able to also. It's not easy, and of course your mother's ideas are racist & wrong, but the point is, they're HER ideas, not yours. When my demented mother gets going on one of her tirades, I just leave her presence or change the subject since I'M the one who's going to wind up eating Tums as a result of getting upset! My daughter has a cow every time my mother starts in on one of her commentaries about gays, and I tell her the same thing: let it go in one ear and out the other.

The best way to overcome old ideas is to teach new ones to our own family.......erase the prejudices WE were taught and teach our own kids and grandkids that all humans are equal, regardless of their race, religion, sexuality or social standing. To me, that's how to live a better life; not by trying to fix our broken mothers.

I don’t think you should fault your mother as it is likely she can’t help it. Her filters and reasoning abilities are gone. When my mother had dementia, she would say the most racist things and I had never heard her do that. My husband is now in stage 2 Alzheimer’s and he is doing the same thing. We are both African American and know first hand, the sting of racism. We have always had friends from many races and cultures. In the last year and a half he has started complaining about foreign accents. He’ll say, “There’s all of the Mexicans and Chinese and they don’t talk American.” Or when he sees Asian Americans on TV he will get very stressed and confused and say, “Look honey, why are all of these Asians on TV?” I remind him that it is normal and desirable for media to reflect ALL people in our society and that African Americans have fought to be seen and heard in the media too. My husband holds multiple degrees and has traveled the world. In fact, China remains his most favorite destination. But it’s not about intellect or racism. He just does not have the ability to understand the import of his words. It is sad when I hear him say these things but I’m never embarrassed because he has no control over it. Be gentle with your mom, I’m sure her caregiver has seen this before and understands what is happening.

You will accomplish nothing by yelling at mom.
With dementia one looses inhibitions that prevent the things that will pop out of her mouth.
A good caregiver will understand and ignore comments. But you can tell the caregiver that if she feels uncomfortable to let you know and together you can begin looking for a replacement if that is what she wishes.
In the meantime try to ignore comments she makes

You're right to be angry when you hear that kind of racist nonsense. Yelling wasn't ideal and won't help, so just don't do it again. You've apologized to the carer, which was called for and thoughtful of you. I wouldn't keep apologizing, but maybe a nice compliment on how the carer must have great strength of character to do a job that's so often thankless.

Mortified. Perfect word. It is the feeling I get when an aide tells me that my mom “threw her teeth at her”. What can you say in response? “I am SO sorry that she did that to you” seems inadequate. I make
it my responsibility to show respect and gratitude with every interaction and hopefully 🙏 we will get through this ordeal.

Was she always this way or has her dementia brought this on? My dad was suspicious about people who he normally wouldn’t have been as his dementia progressed, even family members. If she has always been racially prejudiced but kept it to herself perhaps dementia has made he loose her “filter”. It is quite a conundrum for you for sure but if her caregiver is willing to laugh it off and she knows you don’t share the sentiments maybe you shouldn’t worry about it.

I’d blame your GrandMother. Say to the aides that GM was racist, and this is what your mother heard when she was a child. She has never thought this since you have known her, but unfortunately she is regressing to her childhood and GM’s type of language. Please forgive her and ignore it. Whether it's true or not, it won't hurt GM and may help a difficult situation.

You Mom has a Dementia. She has lost her filter so what pops in her head comes out of her mouth. If this bother's the aide and she wants to continue as an aide caring for people with Dementia, she will need to allow these types of comments to roll off her back. Your mother can no longer be reasoned with.

Your mom will not change at this point in her life. Accept this. Let the caregivers know that you do not share your mother's viewpoints. Ask them if her comments bother them. You can apologize to her caregivers and let them know you really appreciate their care of your mom.

I think that depends on whether your mother is suffering from ang cognitive decline / dementia. If she is then I think you have a conversation with her carer and find out to what extent it upsets her, and to what extent she can accept it as part of the disease. I don't consider there is any excuse for your mother's racist behaviour apart from lack of mental ability. This sounds like one you, the carer and your mother's doctor need to be in good communication on. Whether you are wrong for shouting at your mother is going to depend on her mental state - there is no point shouting at someone with dementia - but the most important thing is that the carer knows she has your support and if she does have problems with mother's behaviour she can come to you to discuss things.