Task: Question Generation
Input (English): Kerry was arrested on May 30, 1971, during a VVAW march to honor American POWs held captive by North Vietnam. The march was planned as a multi-day event from Concord to Boston, and while in Lexington, participants tried to camp on the village green. At 2:30 a.m., local and state police arrested 441 demonstrators, including Kerry, for trespassing. All were given the Miranda Warning and were hauled away on school buses to spend the night at the Lexington Public Works Garage. Kerry and the other protesters later paid a $5 fine, and were released. The mass arrests caused a community backlash and ended up giving positive coverage to the VVAW.
Output (English): When was Kerry arrested for protesting?