remorse
-noun- a feeling of deep regret (usually for some misdeed)
Link to present incidents:
Two members of the former Red Armny Faction, Brigitte Mohnhaupt and Christian Klar, are petitioning to be released early from prison. Their requests have kicked up a furious debate in Germany over how to treat a pair of aging far-left terrorists, neither of whom has publicly expressed remorse for their crimes.