If we are going to ban the Confederate Flag because it was a symbol of slavery, then to be consistent, we should ban the Stars and stripes too.
It flew over slavery for much, much longer than any flag of the Confederacy. If the logic is that the flag flew over slave-owning lands, then the Stars and Stripes has to go, as well.
Heck, even the Ku Klux Klan flews the Stars and Stripes in their rallies...
If we go down that road, we will continue to be lopsided in our views, unaware of our own history