Just in case you meet a passing riot, this is what you have to say:
"Our Sovereign Lord the King chargeth and commandeth all persons, being assembled, immediately to disperse themselves, and peaceably to depart to their habitations, or to their lawful business, upon the pains contained in the act made in the first year of King George, for preventing tumults and riotous assemblies. God Save the King!"
(I learned this in the early 1980s when working in a school... it stopped playground fights even if the kids were more puzzled than anything else!)