What is it about Union Square that brings out the belligerence in people? (Anyone who’s tried to get through the Greenmarket in a hurry can probably answer that.) If it’s not thugs fighting with guns and knives, it’s hipsters fighting with pillows, activists fighting to stop a restaurant, and now this: organized combat in the spirit of Fight Club. Blogger And I Am Not Lying has a breathlessly detailed account of last week’s smackdown. After......