Ballooning became a huge fad starting in the late 18th century, and there was a surprising amount of rioting associated with it. Fervor, excitement, and intoxication in some instances, meant that balloon events were prone to get out of control.
Research:

The Rendition of Anthony Burns, Part 1
34:40

SYMHC Classics: Samuel Pepys
33:09

Behind the Scenes Minis: Pollution Olympics
24:24