Hagan said he received a master's degree in sociology while incarcerated and that helped him deal with his actions from 45 years ago.
"I understand a lot better the dynamics of movements and what can happen inside movements and conflicts that can come up, but I have deep regrets about my participation in that." He added, "Unfortunately, I didn't have an in-depth understanding of what was really going on myself to let myself be involved in anything like that. ... I can't really describe my remiss and my remorse for my actions -- basically a very young man, a very uneducated man. "