In a separate video, the activists sit on the ground holding signs while police attempt to speak with them.
A bald man stepped off the pavement and grabbed a female protester by the arm, dragging her towards the pavement.
As he neared the pavement, a policeman rushed forward and tackled him into the perimeter surrounding Parliament, with another officer walking to his side.
The officer’s actions have proven controversial to some people, who have suggested he targeted the wrong person.
