Katy wanted a woke millennial angst anthem, but Chained To The Rhythm sounds calculated and insincere. P!nk’s instant hit expresses the emotional tumult of 2017’s disheartened young people much better. — Pop rarely does politics well. Lyrically, pop is obsessed with age-old concerns of all people. The genre rewrites universal experiences of life over and over. It does love very well. It rephrases joy, disappointment, anger, excitement, and hope. Every year that seismic political events occupy the public’s attention, pop stars…