MIAMI BEACH, Fla. – Miami Beach police officers are working 12-hour shifts and the message from law enforcement is that spring breakers coming to the city with the idea that there are no rules will be arrested. Spring breakers were out of control Friday night with police having to respond with force. Miami Beach Mayor Dan Gelber said rocks and bottles were thrown at officers patrolling the streets. A lot of people are coming here and they are coming here with the wrong intentions,” Gelber said. While more crowds are expected Saturday night, Miami-Dade County officials remind everyone that a midnight curfew is still in effect.