Why do conservatives act like they care about the dignity of minorities when they say white liberals should not be offended for minorities?

you always see and hear conservatives get mad at liberals for getting offended for minorities. and the conversation usually goes like this:

"As a conservative I don't like how white women and white liberals are speaking for minorities about racism when its humiliating for minorities suffering from racism."

what the conservative really means.

"I don't understand why this white person is betraying me and calling me a racist for pointing out I am a racist, this white liberal hates himself for being white but I can't call him a race traitor because that makes me a racist."

Why do conservatives act like they care about the dignity of minorities when they say white liberals should not be offended for minorities?
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