On a warm May evening with daylight still left, a 30-year-old woman was out for a long walk on the streets of Hyde Park, with its oak-shaded bungalows, swanky shops and bustling bars and restaurants. She would later tell police she didn’t think anything of it when she passed by a homeless man. Then he chased her. The man grabbed her by her ponytail, slammed her to the ground and punched her in .