Here's the gist of the Riot Act [enforced by the British government in 1715]:
"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."
In other words (aka the British way): 'you noisy louts, don't you know there are people here trying to sleep?'
OR (the un-cut and slightly un-kind and definitely non-British version):
tell someone(s) to "Shut the F*&#$% Up!"...
[Source: The Phrase Finder]
