When Wilkes was imprisoned in the King's Bench Prison on 10 May 1768, his supporters appeared before King's Bench, London, chanting "No liberty, no King." Troops opened fire on the unarmed men, killing seven and wounding fifteen, an incident that came to be known as the St George's Fields Massacre. The Irish playwright Hugh Kelly, a prominent supporter of the government, defended the right of the army to use force against rioters, which drew the anger of Wilkes' supporters and they began a riot at the Drury Lane Theatre during the performance of Kelly's new play "A Word to the Wise", forcing it to be abandoned.