Passage: The Priestley Riots (also known as the Birmingham Riots of 1791) took place from 14 July to 17 July 1791 in Birmingham, 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.

Question: Who was the most notable target for the Priestley Riots?
Joseph Priestley