[ Etiquette ] Open Question : Why don’t my parents believe that black lives matter?

I do and I have fully supported charities and protests, but they do not. Actually, they’ve been mocking the current events and my mother has even said “Black lives don’t matter, but mine does. I’m sick of this crap.” Why are some people like this? Do you think she would be more understanding if she educated herself? Or are some people too closed off for that?