Should they stand where they do probably not. Should they be destroy definatly not. Put them in a public government museum next to a plaque describing what awfull fuckers they where. Or skip the museum and just add a plaque explaining this is the awfull shit this cockface stood for every month on a friday afternoon we have an egg throughing contest for his face etc etc.
For example i went to a cynagog/museum u know what they had in said museum a friggin nazi uniform along with a plaque and the story of how it was taken as a trophy when they ripped the fucker limb from limb while the allied forces looked the other direction. That sends a message that tells more history of how awfull the camps must have been that soldiers would look the other direction while some guy gets killed by the mob.
For goodness sake destroying history nomatter how dark will lead to worse places. “Those who forget history are condemned to repeat it”.