Entryism, but reversed. How much you consider Entryism to be a problem vs a feature of democracy is up for debate. I'm of the opinion that it's a fairly serious

Entryism, but reversed. How much you consider Entryism to be a problem vs a feature of democracy is up for debate. I'm of the opinion that it's a fairly serious problem, in that it can easily destroy the 'Ship of Theseus', the internal continuity of an organization has been compromised.