NEW YORK — Lady Gaga dropped from the top of Houston’s NRG Stadium to open her halftime show and dropped the mic at the end, offering a program that delivered high-energy hits and an inclusive theme. With the nation on edge politically, the NFL had little taste for a show that would ruffle feathers, as Beyonce did in some circles last year with the Black Power messaging of “Formation.” Gaga plainly listened. She was patriotic from the start, opening with snippets of “God Bless America” and “This Land is Your Land” with red and blue lights twinkling above her, before guide wires delivered her to the stage below.