Moment masked thugs on a quad bike hurled rocks at a team

This is the moment masked thugs on a quad bike hurled rocks at a team of hunt saboteurs smashing their windscreen.

The dash-cam clip shows the three thugs riding on a single bike towards a van being driven by West Yorkshire Hunt Saboteurs.

Two rocks collide with the sabs' windscreen before the balaclava-clad men speed off from the scene in North Yorkshire.