“Freaking has gained widespread acceptance in recent years, propelled by the mainstreaming of rap music and the sultry images in hip-hop videos. Critics say its unquestionably carnal positions — girl bent at the waist, boy thrusting behind her — go far beyond previous generations’ bumping and grinding. ‘Every generation finds its successors’ dances to be improprieties,’ said Judith Lynne Hanna, a University of Maryland senior scholar and author of a book on dance and sexuality.” Even so, “educators from New Hampshire to Washington state are growing increasingly agitated.”