Beginning of Priestley Riots (to 17 July) in Birmingham targeting Joseph Priestley as a supporter of the French Revolution.

The Priestley Riots took place from 14 July to 17 July 1791 in Birmingham, Warwickshire, England; the rioters' main targets were religious dissenters, most notably the politically and theologically controversial Joseph Priestley. Both local and national issues stirred the passions of the rioters, from disagreements over public library book purchases, to controversies over Dissenters' attempts to gain full civil rights and their support of the French Revolution.

Birmingham is a city and metropolitan borough in the metropolitan county of West Midlands, within the wider West Midlands region, in England. It is the largest local authority district in England by population and the second-largest city in Britain – commonly referred to as the second city of the United Kingdom – with a population of 1.16 million people in the city proper in 2022. Birmingham borders the Black Country to its west and, together with the city of Wolverhampton and towns including Dudley and Solihull, forms the West Midlands conurbation. The royal town of Sutton Coldfield is incorporated within the city limits to the northeast. The urban area has a population of 2.65 million.

Joseph Priestley was an English chemist, Unitarian, natural philosopher, separatist theologian, grammarian, multi-subject educator and classical liberal political theorist. He published over 150 works, and conducted experiments in several areas of science.

July 14 is the 195th day of the year in the Gregorian calendar; 170 days remain until the end of the year.