Cincinnati, facing rising violence and hosting the Major League All-Star game next week, is reeling from a downtown melee Saturday night that ended up with a man hospitalized and two police officers injured. “Saturday night was unacceptable,” said Mayor John Cranley . “We are not panicking,” said Police Chief Jeffrey Blackwell. Top political and public safety leaders took responsibility for allowing Saturday night’s violence to occur. And they pledged All-Star Game visitors would be safe. Police said downtown violence has dropped 50 percent from a year ago.