Police in three Jersey Shore communities issued thousands of warning to teens, responded to hundreds of calls and took several dozen minors into custody over a chaotic Memorial Day weekend, police reports and public records show. Thousands of teens and young adults crowded into Seaside Heights, Ocean City and Wildwood, where that city’s boardwalk was temporarily closed during a period of “civil unrest.” Gov. Phil Murphy would dismiss the characterization that the three Shore communities experienced a chaotic weekend while state Attorney General General Matthew J. Platkin and the mayor of Wildw…