(How to stop a pair of armies, Sir Samuel Vimes style)<br/><br/>"Arrest the lot of 'em.  Conspiracy to cause an affray," he started to count on his fingers, "going equipped to commit a crime, obstruction, threatening behaviour, loitering with intent, loitering<em>within</em>tent, hah, traveling for the purpose of committing a crime, malicious lingering, and carrying concealed weapons."<br/>