There is no sovereign authority that displays the confederate flag, so what is the purpose of it?
...Courts (click here) have long held that the government cannot silence speech just because it hurts feelings or causes offense. A New York federal court just affirmed this principle last week in holding that police violated the First Amendment when they forced an anti-gay protester to leave a Pride festival. The Court said: “The First Amendment offers sweeping protection that allows all manner of speech to enter the marketplace of ideas. This protection applies to loathsome and unpopular speech with the same force as it does to speech that is celebrated and widely accepted.”...
Freedom of speech is important, but, when it inspires hate that leads to deaths, it has to be regarded as a precursor to death.
The USA has provisions in the law that punish crimes of hate. They are called "Hate Crimes." We know why these crimes happen and Freedom of Speech that inspires hate is a false choice.
People have died at the hand of White Supremacists, including the protest in Charlottesville, Virginia. The White Supremacists/White Nationalists/Alt Right have lost their right to peacefully demonstrate and have their iconic confederate flag displayed.
There isn't anything else to say. The confederate flag and the confederate military statues come down.