I'm not in fact a fan of Lenin either, not at all, but that is not funny. The man is part of History, they should not do such a thing to monuments. He changed history, and believed it was for the better good, and thus one has to respect History, not make fun of it.
Yes, revolutionaries did broke down monuments of the Imperial Regime too, but this is totally different - and even if you disgust the person or what he stands for, one should respect the monuments with respect because they are part of history.