WARNING: Graphic Disturbing video of an emaciated young woman covered in sores on the streets of Philadelphia has been described as a heartbreaking view of the “American tragedy”. The homeless addict, Sandi, spoke to AML Films in the city’s notorious Kensington neighbourhood, an open-air drug market that has become ground zero in the unprecedented crisis gripping the nation. In a depressing clip that has gone viral online, the young woman — who has a gaping injection wound on her shoulder — performs a “parody” of the Destiny’s Child song Bootylicious to the camera. “I don’t think you’re ready for this…