Harris 2020

And as an older person I can totally understand how a different set of societal and political circumstances can cause you to have completely different opinions than you do 20 or 40 years later.

Granted, some are just plain wrong, like any kind of racism, but even things like busing were not cut and dried back in the day. In retrospect we all know it was the painful first step toward integration. But at the time it was intensely unpopular. He should have been able to explain that he has evolved as times have changed, and that he would have made a different choice based on what he knows now.