As the State Street crowd turned suddenly riotous early Sunday morning, police resorted to the use of pepper spray to quell the horde of Halloween revelers for the fourth year in a row. Madison’s Halloween tradition is now in jeopardy, as indicated by a release Sunday from Madison Mayor Dave Cieslewicz and Police Chief Noble Wray, which raised serious questions about the future of the event. Discussions to cancel the event or limit it are expected to ensue over the course of next year.