It only takes the finding of a "suspicious device" to clear a public building these days, at least until a police bomb squad can take a look at it.
Bomb squads were far busier in the late 1960s and early 70s, the time that provides the title for Bryan Burrough's book, Days of Rage. And they responded to more than threats: many actual real bombings, nearly one a week at the peak.
Burrough takes a new look at those days, with fresh interviews with members of the radical groups that wanted to change America--violently.
The author joins us to talk about what he found.