Farmers protesting the central government's agrarian reforms clashed with the police in Uttarakhand's Udham Singh Nagar district on Friday, with dramatic footage showing the demonstrators running a tractor over a barricade as dozens of policemen try to hold them back. A video posted on Twitter by news agency ANI showed a large crowd of protesters facing off with the police. A few protesters driving a green tractor charge at a barricade, running it down and forcing the policemen to finally get out of the way.