Why don't most Gen X parents know what Jim Crow laws are?

Whenever I talked to my mom and stepdad about Jim Crow, they either told me they don't know what it is or asked me what it is. My mom didn't even know what colonization meant. We're all white.

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It's literally something I was taught in school as well as on Twitter.
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Another thing too, red lining IS still a thing just not officially called red lining, just like slavery is still around, just not officially called slavery. "You put lipstick on a pig, it is still a pig." - Barack Obama
Why don't most Gen X parents know what Jim Crow laws are?
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