NYPD Chief of Patrol Philip Rivera’s connections to Puerto Rico are evident in his 13th floor office at One Police Plaza in Lower Manhattan. A giant red, white and blue Puerto Rican flag stands in one corner and a smaller one flies on his desk. A fluorescent wall-hanging decorated with the flag and palm trees hangs above a door and other keepsakes dot the furniture. “I had detectives who were Puerto Rican, lieutenants, sergeants,” the 52-year-old said of his early years in the department where