Violence corrupts absolutely? I thought it was Power, as in Max Weber's definitions of power, one of which happens to be persuasion, as in the persuasive power Ms. Foster possesses... And appears to have been corrupted by.
Violence in and of itself is essential to life on Earth, including humanity. Life is violence, from prize fighting to chewing celery. The most ironic thing is that 'enlightened' ones like Foster would have no problem using violence to remove guns from everyone else's hands, it's not wrong if it's for a good cause, and all that...