How can the right make the statement “slavery was so long ago, get over it”?

I hear this a lot from the right but it really doesn’t make since to me because they say that the left lives in the past but at the drop of a hat will say democrats are racist because they fought for slavery and made Jim crow laws, but wait isn’t that in the past too huh imagine that 🤔
How can the right make the statement “slavery was so long ago, get over it”?
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