If the aircraft is a WW2 artifact, rebuild, replica, what’s the problem if it’s painted ..’as was’ in the war, with a swastika on the tail. That was the reality of the time and historically correct.
And it should remind people of what it meant, and that it shouldn’t be happening again.
The modern use by protesters with Nazi swastika flags and Hitler salutes shows that those people either don’t care or know about the vile history of Nazism.
History repeats. Seems like many Russians don’t mind Putinism either. Funny that, they weren’t too keen on Hilterism when the jackboots were on the other feet 80 years ago.