Scamming is partly intense psychological violence, and its financial and psychological consequences are far reaching, and here at an unfathomable scale - an entire city of people! In this sense they terrorize people. And they should likewise be relentlessly pursued and sentenced as a consequence. That city would go to war against them if they were one.

But yeah, i don't know, maybe we need a new word for such criminals. The superlative for murderers is "mass murderers". "Mass scammers?"