Everyone acts like this is something new. (Mostly leftist) Radicals have been setting off bombs in public places since Guy Fawkes.
What’s worse is that many Americans love — or at least sympathize with — mad bombers when they come from the left.
For example:
— The Haymarket bombing of 1886 is celebrated as an advance in the American labor movement.
— The anarchist bombings in the early 20th Century are viewed as direct action for social justice, and the criminal prosecution of their perpetrators is viewed as vindictive and unjust.
— The Unabomber’s (Ted Kaczynski) Industrial Society and Its Future is pretty much an environmentalist manifesto.
— The exploits of the SDS and Weather Underground are romantically celebrated as expressions of 60s idealism, while some of their leaders (including Obama supporters Doehrn and Ayers) occupy prestigious positions rather than prison cells.