Riots started by unruly actions of a person

During some little research on riots, I've became interested in those which were started by the act of a unruly person. I've got some examples from what my research suggested to me:

1968 Miami riot: After a white reporter was forcibly ejected from the “Blacks Only” rally, Miami police responded with five cars and a carbine unit, which exacerbated tensions. A white man in a car brandishing a “Wallace for President” bumper sticker attempted to drive through the vicinity. As he passed the Vote Power building, his automobile was met with a barrage of stones and bottles and crashed into another car. The driver fled on foot, and his car was overturned and set on fire. Vandals ransacked white-owned businesses in Liberty City’s commercial district. Police eventually quelled the outbreak with tear gas. Later, there were riots that left three people dead.

Vashdean: Bishop threw himself in a church altar and provoked a sacrifice

Haymarket affair: It began as a peaceful rally in support of workers striking for an eight-hour work day, the day after police killed one and injured several workers. An unknown person threw a dynamite bomb at the police as they acted to disperse the meeting, and the bomb blast and ensuing gunfire resulted in the deaths of seven police officers and at least four civilians; dozens of others were wounded.

Olinda amok case: During Otto's show in the Praça do Carmo at a MIMO festival, a person threw a beer can that supposedly exploded in the middle of the crowd. It is not known if there was a explosion, or not, nor does the incident have reports mentioning a beer can being thrown into concertgoers. However, there were witnesses that day recalling a man running into the Policlínica João de Barros Barreto after throwing an object before being subdued by security guards and police officers. The man told he was having an epileptic seizure, and was released. He has yet to be found. Later, another object-throwing incident started a riot at the festival. A man threw a glass bottle at the face of a police officer, starting the disorder.

John Hetherington: John Hetherington is a presumed apocryphal English haberdasher, often credited as the inventor of the top hat, which is said to have caused a riot when he first wore it in public on 15 January 1797.

These are so far the incidents I found. Greetings.

The infamous Watts and Rodney King riots were sparked (at least in part) after an African-American on parole for a previous criminal conviction was pulled over for reckless driving and then got into a fight with the police.

Other possible example found:
1978 Qom protest stone throwing incident
"...The 9 January protests turned violent when someone, protestors or provocateurs, threw stone breaking the window of a nearby bank which resulted in the security forces using live ammunition to disperse and attack people. Between 5-300 people were consequently killed in the protest..."