Daniel Joseph Berrigan SJ was an American Jesuit priest, anti-war activist, and poet. Like many others during the 1960s, Berrigan's active protest against the Vietnam War earned him both scorn and admiration, but it was his participation in the Catonsville Nine that made him famous. source
The first day I walked into prison, and he slammed that door, I knew the magnitude of the decision that I made, and the poor judgment, and what I allowed to happen to the animals. And, you know, it's no way of explaining the hurt and the guilt that I felt. And that was the reason I cried so many nights.