Original: During his Ascension Day sermon on May 4, 1497, bands of youths rioted, and the riot became a revolt: dancing and singing taverns reopened, and men again dared to gamble publicly.
Simplified: During his Ascension Day sermon on May 4, 1497, groups of young men rioted in the streets, people began singing and dancing, and the taverns reopened. The riot became a revolution.