No, I haven't 'needed' to. While my fists work just fine, I've not encountered anyone that I didn't adequately set straight verbally. But mind you, most just grow uncomfortable and leave. *I can almost feel the eye's rolling after that one!

* I'm glad I'm not so tender that the truth hurts me.
I'll close with some great historical quotes applicable to this war and any negative opinion of it.
"There exists a law, not written down anywhere, but inborn in our hearts; a law which comes to us not by training or custom or reading; a law which has come to us not from theory but from practice, not by instruction but by natural intuition. I refer to the law which lays it down that, if our lives are endangered by plots or violence or armed robbers or enemies, any and every method of protecting ourselves is morally right."
- Marcus Tulius Cicero (106-53 BC)
"Americans used to roar like lions for liberty. Now we bleat like sheep for security." - Norman Vincent Peale
"The true danger is when liberty is nibbled away, for expedients, and by parts ... the only thing necessary for evil to triumph is for good men to do nothing."
- Edmund Burke
"For we wrestle not against flesh and blood, but against principalities, against powers, against the rulers of the darkness of this world, against spiritual wickedness in high places.
- Ephesians 6:12
"There are two views of history: (1) History happens by accident or (2) It is planned. The general public is taught that history happens by accident. However, the upper echelons... know that history is planned."
- R.E. McMaster, Jr., The Power of Total Perspective.
"The tree of liberty must be refreshed from time to time with the blood of patriots and tyrants. It is its natural manure."
- Thomas Jefferson
Speak for themselves, don't they.