They are APNU/ AFC supporters who was trying to gain access to the command ctr. The guy rite behind the police man is a know PNC activist, he is the one who came out urging the supporters to come inside and see Jagdeo and his ministers were breaking down the door to Cladette Singh. ( that video was live streaming on newsroom on Friday)
For their own reasons, they don't want anyone to gain access to her.
Note: she hides from all the observers and media. Even Jason Carter from Carter center commented about this.