I want to test the ability of students to read a passage and answer questions about it. Could you please come up with a good question for the passage "The Stonewall riots were a series of spontaneous, violent demonstrations by members of the gay community against a police raid that took place in the early morning hours of June 28, 1969, at the Stonewall Inn in the Greenwich Village neighborhood of Lower Manhattan. They are widely considered to constitute the single most important event leading to the gay liberation movement and the modern fight for LGBT rights in the United States."?
Answer:
What sparked the protests?