system
Given the following post, respond as if you're commenting on Reddit:
human
ELI5: What is the confederate flag, is it "racist"?

I'm not American so I'm not sure exactly what the flag stands for, I just know some people consider it racist.
gpt
The flag you see on top of the Dukes' of Hazzard car, what most people call the Confederate Flag these days, was one of several battle flags used by southern forces during the Civil War. If that was the last time it was used, it would bear no more than a lingering whiff of racism and be mostly unknown to the general public. However, in the 50s and 60s that flag was adopted by Klan groups, white supremacists, segregationists, and general racists in their fight against black civil rights. 

It's just a St. Andrew's cross and some stars, but the racists of the 20th century took it as their symbol, and their symbol it remains. People try to reuse it, at times it's seen as campy or ironic, but it's like a swastika. The stain remains.