I am sure neo-nazis could argue the same way, that a statue of Hitler could be interpreted the same way, so let's put it up as well.
You are right - a statue of Hitler would never ever fly, and we both know the reason for that.
The statue of Lenin can be viewed in a variety of ways. I like to look at it as a trophy of conquest. We won. The commie bogey man is no more. See? This symbol of communist authority, the cult of personality, it's here, powerless, a reminder of a sad chapter in history. Sayonara mother fucker.