These guys are amateurs compared to the Mexican scrappers who sold hospital equipment containing 6,000 pellets of cobalt-60 for scrap. The machinery was then processed into rebar which was in turn was used in god knows how many homes in Mexico and the USA as well as metal furniture that ended ups as far away as Canada. [...] One person died of bone cancer, another 4 were injured and least 10 individuals received significant exposures and some scrapyard workers became sterile. There is also a good chance that many more people either will, or already have, developed cancer since it took about a year to discover this snafu and even longer to track down all the contaminated material already in use. This story made me think about how US Homeland security worries about 'dirty bombs'.
Thus the truism, never attribute to malice that which can be attributed to stupidity or circumstance. While the threat of terrorism is real, it is so small compared to random acts of stupidity that it's hardly worth getting all worked up over it like we have.