Acknowledging the dark path Karl Marx created, it's still a bad path to support this sort of destruction as political statement. We're not very far from muslims blowing up Buddha statues at this point.
Leave the historic detritus where it lies, and use it as a teaching tool.
Yeah, considering that people were taught all about the French Revolution and Reign of Terror, up to and including all the bloodshed, and Marx STILL aimed for reenacting that awful event and that, if anything, he wanted to INCREASE the amount of bloodshed, I’d prefer destroying the monument over leaving it to historic detritus, or using it as a teaching tool. Don’t believe me about Marx being inspired by the Reign of Terror, read these quotes:
“There is only one way in which the murderous death agonies of the old society and the bloody birth throes of the new society can be shortened, simplified and concentrated, and that way is revolutionary terror.”-Marx, Karl, “The Victory of the Counterrevolution in Vienna”, Neue Rheinische Zeitung, November 1848.
“Once we are at the helm, we shall be obliged to reenact the year 1793…”-Marx-Engels Gesamt-Ausgabe, vol. vi pp 503–505, final issue of Neue Rheinische Zeitung, May 18, 1849. Quoted in Thomas G. West, Marx and Lenin, The Claremont Institute
“The vengeance of the people will break forth with such ferocity that not even the year 1793 enables us to envisage it.”-Marx-Engels Gesamt-Ausgabe, vol. vi pp 503–505, final issue of Neue Rheinische Zeitung, May 18, 1849. Quoted in Thomas G. West, Marx and Lenin, The Claremont Institute
Marx is if anything the type of guy who, even after learning from history, attempts to repeat it ANYWAYS, and make it even worse. If he was going to do that, so can others, which is EXACTLY why using him as a teaching tool is a mistake.