in Naples I didn't feel threatened at any point, people were very respectful. In London it can be common to get pick-pocketed or mugged.
although tourists are not killed in napoli (only a few in decades) its very easy being mugged in napoli, everyone who go there told me about and myself saw it its quite dangerous even for tourists
london is dangerous too but there is not mafia, more gangs and petty crimes at most
but if you took all the camorra-related crimes like extortions to every shops even the little ones and other tons of crimes you see that napoli is far more dangerous than london, for shopkeepers and everyone
