After the Civil War, the Confederate Battle Flag used to be followed via a few companies, together with the Ku Klux Klan

https://mill-wiki.win/index.php/What_Battles_Was_the_Confederate_Flag_Flown_In%3F_Exploring_Its_Historical_Context

After the Civil War, the Confederate Battle Flag become followed with the aid of a couple of agencies, such as the Ku Klux Klan, which modified its meaning into one related to racism and segregation.