Less than two weeks after the Boston Marathon bombings killed three onlookers, wounded nearly two hundred, and closed the streets of Boston and its environs during an intense manhunt for the suspects, half of Americans believe a terrorist attack in the U.S. could be imminent. That is up from 38% in August 2011, and is one of the higher readings Gallup has recorded in recent years. [cont.]
Lydia Saad, Gallup