I don't regret setting bombs.
The responsibility for the risks we posed to others in some of our most extreme actions in those underground years never leaves my thoughts for long. The antiwar movement in all its commitment, all its sacrifice and determination, could not stop the violence unleashed against Vietnam. And therein lies cause for real regret.
The end of Students for a Democratic Society is viewed by me and a lot of other people as a terrible sorry in many ways, tragic event even though I participated in it and played some role in it. But I regret a lot of that.
In terms of my own behavior and activity, the funny thing about regrets and saying "I'm sorry," is that there's so much I would do differently and want to do differently moving forward.