This $5 wrench says otherwise.
I don't think you comprehend the workings of "mass terror". Here's how it goes: we'll make you watch while we beat up your wife and kids until you tell us something worth knowing.
No evidence necessary. Pretty much everybody has some valuables, or knows someone who does, and if not who cares? It's your funeral.
Once again, the nerdy preconception that thugs somehow operate on a legalistic or technical basis is just completely wrong. You'll be the one "giving" the valuables to them, to make it stop.