Self Protection for "The Greater Good"?

I found these quotes in a book I was given as a gift. Thought they were good illustrations of how the debate about 'defensive violence' has been a long one.

"Though defensive violence will always be 'a sad necessity' in the eyes of men of principle, it would still be more unfortunate if wrongdoers should dominate just men."
- St Augustine

"No greater wrong can ever be done than to put a good man at the mercy a bad, while telling him not to defend himself or his fellows; in no way can the success of evil be made surer and quicker."
- Theodore Roosevelt

"I don't even call it violence when it's self defense; I call it intelligence."
- Malcolm X

Walk softly and carry a big stick
and Evil will only prevail when good men do nothing.....two of my absolute faves!
Mick x