An on-duty policeman was heckled and assaulted by a group of lawyers outside a district court complex in Delhi's Saket neighbourhood today. The shocking incident, filmed by a bystander on what appears to be a mobile phone camera, comes only two days after violent clashes between lawyers and cops at the city's Tis Hazari court complex left 28 people injured, 20 vehicles vandalised and forced the Delhi High Court to take suo motu cognisance of the attack and hold an emergency hearing on Sunday.