Some states do, or did until all the faux outrage, fly the Confederate flag, again, as a symbol of regional heritage and pride.
The regional heritage they are celebrating was one of declaring war against their fellow Americans, prosecuting that war to the extreme - including killing their fellow Americans by the tens of thousands for years on end - and in all ways including outright murder committing treason,
all in defense of racially based slavery. A world based on industrial scale chattel slavery, in which every institution and every custom and every detail of daily life was founded in racial oppression, is the regional heritage they are proud of.
There is no other heritage available to those who fly that flag - that heritage is what that flag was invented to represent, and has represented ever since.
Black people are overwhelmingly killed by other black people.
Another evil consequence of the endemic racism of self-identified "white" people, as manifested in the forced segregation of white-identified "black" people and the vulnerability to crime attendant on poor law enforcement in these long-maintained economic ghettos, the mental effects of lead-poisoned environments, and the siphoning of community wealth as fast as it becomes available to mitigate the effects of abuse.
That they should voluntarily surrender their freedom of expression because other people have a personal problem?
Other people - meaning decent human beings, all of whom want this shit to stop - have far more than a "personal problem" with allowing free expression to violent racial bigotry and terroristic threats. They have a family problem, a community problem, a governance problem, and as we see again recently a law enforcement problem.
And the notion that this surrender must be voluntary went out the window in 1863, when the defenders of racial slavery started killing people in large numbers. The surrender of the modern heirs of that war is not expected to be voluntary - everyone from Malcolm X and James Baldwin to Martin Luther King and Ghandi knew that a generation ago.
Why do you think expressing yourself must be a "fuck you" to anyone?
It's not that it "must" be. It's that in the case of Confederate flag flyers it is.
Many white people see BLM as racist against them,
There are many ignorant white racial bigots - agreed.
See, it always works both ways.
Not by the real life standards of right and wrong, good and bad, mentally healthy and racially bigoted. By those standards one way works, and the other way does not work.
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I suspect many people just don't want to. That civil war is the most exciting thing they ever participated in and they just can't stop fighting it.
They are racial bigots, white supremacists who are defending the core of their identity.
It has little to do with the excitement of a war that ended more than 150 years (and several more exciting wars) ago - it has to do with the psychological effects of racial apartheid and racial terrorism and racial oppression of the black people in the US by the white people in the US during those 150 years since and continuing today.
I don't understand what positive achievements those two symbols are meant to represent.
The nobility and dignity of white male supremacy. The honor and pride available to these white men in a world run by white men.