Can someone explain to me what there is so be so proud of in the Old Southern heritage?

I came across a post that said protecting the statue of Robert E Lee and flying the Confederate flag was a sign of pride in their heritage, not racism.

I then asked two questions, neither of which were answered:

1) What, specifically, is there to be so proud of

and

2) Why is it only white people who express pride in that heritage?

I’m really curious.