An unplanned gathering in New York City, organized by a popular online influencer, unexpectedly drew a large crowd on Friday and turned violent, resulting in injuries and necessitating a significant police response, according to authorities. The event was sparked by a post on Instagram by 21-year-old Kai Cenat, inviting his fans to join him in lower Manhattan for a live-streamed gathering where he planned to distribute gifts, including PlayStation 5 game consoles.