Remember the neighbor of the San Bernadino terrorists who said he saw suspicous activity in the garage, but was didn’t say anything for fear of being branded a racist.?
Psych makes interesting points. Is it better for a society to have a lot of over reporting versus the damage done by one terrorist attack?. Which is costlier in terms of money, quality of life, etc.? I see at least one suspicious package or white powder story in the news every day that police have to respond to, but then some are explosives or anthrax.