L'incident va tenir lloc quan l'oficial de policia va agafar la bossa de Ng i li va fregar el pit amb el braç, moment en què, de manera instintiva, Ng va cridar "agressió sexual".
The incident occurred when the police officer grasped Ng's bag during the protest and she instinctively shouted "indecent assault", as the police officer's arm brushed her breast.