A year since violence broke out in the national capital on the Republic Day following a tractor parade by farmers protesting against central farm laws, the Delhi Police has arrested around 160 people and registered 54 cases, officials said on Tuesday. As India celebrated its 72nd Republic Day on January 26, 2021, thousands of protesters entered Delhi on their tractors and wreaked havoc on roads, clashed with police, and even hoisted a religious flag from the ramparts of the iconic Red Fort, a privilege reserved for the Indian tricolour.