Answer:
The riots were caused due to the raids on the bar by the policemen at the time of election for the mayor of New York city.
Explanation:
The riots were caused due to the raids on the bar where homosexual are present by the policemen at the time of election which was held for the post of mayor of New York city. The new captain who wishes to prove himself and make his reputation of law and order man. these raids leads to anger in the homosexuals of the New York city and the riots were started in the New York city.