I have a deep resonant voice......hardly shrill.  and yes, I do assume those folks driving around in their pick-ups flying the Confederate Flag would be somewhat less than receptive to a civil conversation regarding their display of that flag.  Don't be so silly as to suggest that's an unwarranted assumption.  I have, however, confronted individuals regarding the use of racial epithets.  I've done so with the comment "I find racial epithets offensive and would prefer your not using them in my presence.  If that's not possible, let me know and I'll simply leave."  I've both received apologies and defensive reactions....I've both continued conversations and left.  I, frankly, have no desire for a confrontation with some "red neck" driving around waving a Confederate Flag in the back of his pick-up.....and, yes, I'm assuming it would be most unpleasant.   Gary Crum