Disturbing footage of the Tuesday afternoon attack was captured by surveillance cameras inside the Chinatown SEPTA station, and ultimately led to the man's arrest two days later.
In the video, the attacker can be seen asking a woman for a lighter before suddenly erupting in a barrage of punches. The assailant attempts to choke the victim, then grabs her leg and drags her over to the edge of the platform, tossing her over.
He then grabs the victim's cell phone and leaves the station.
Happily, the 23-year-old woman emerged from the violence relatively unscathed, with only minor injuries to her head and face.
Clark, whose "Trump Taj Mahal Casino Resorts" jacket helped police identify him as the suspect, had a substantial rap sheet which includes priors for burglary, theft, and carjacking.