Didn't you hear? The past was always better, and Now is always the low ebb in the decline of our civilization until we return to the values that made yesterday great.

If the past is somehow to blame for the problems of today, that might mean there was something wrong with the past. If that's the case, then maybe other things from the past have problems, including things that I like or benefit me personally, or that changing would imply a lot of big scary changes that I'm not ready for.

That's why attempts to talk about little mistakes from the past like chattel slavery, indigenous genocide, phillipino genocide or endemic discrimination and institutionalized racism are just attempts by bad people to tear down perfection and keep us from returning to a simpler, better time where those mistakes never happened.