If people can recognised it as a swastika, then it's probably not a good thing to have displayed openly in the first place on account of, y'know, the recent history.
It's 70 years ago, people need to get over it. Not to mention that Stalin on his own, leaving other Soviet leaders out of it, murdered more people than Hitler, and people don't get on their high horse about people displaying the actual flag of the 1930s Soviet Union as retro chic.
If people can recognised it as a swastika, then it's probably not a good thing to have displayed openly in the first place on account of, y'know, the recent history.