I think that's because it's been affecting a fairly large number of people (compared to the number of perpetrators) over a fairly long period of time. I think i

I think that's because it's been affecting a fairly large number of people (compared to the number of perpetrators) over a fairly long period of time. I think it's also because it's public enough that the police are worried about the message that would be sent if they didn't seriously try to stop it.