Confederate monuments and memorabilia are as offensive to someone whose ancestors lived through, or experienced slavery, as the swastika is to the Jews. If painting a swastika is a federal hate crime, flying the confederate flag also should be deemed to be a federal hate crime.
The murder of Christians and Jews by the Nazis ended decades ago. The murders of Black Americans by White nationalists continues today, and are fueled by the flying of confederate flags, and by the display of confederate monuments and memorabilia.
There is no equal protection of the law (as required by the Constitution of the United States of America) in a city or in a state whose ether is permeated with images of White supremacy. Nor is there any chance of your seeing eternity, if you support White supremacist points of view.
The Lord God Almighty El Shaddai