Complex Numbers

Protestations

My country was, in principle, founded upon the pillars of freedom of speech and equality for all.

Sometimes, however, those exercising the first of these principles demonstrate (pun intended, of course) the fallacy of the second.

http://www.cracked.com/article_15850_25-most-nonsensical-protest-signs.html

(Okay, not all of those are American. My point remains valid.)