The Samyukta Kisan Morcha (SKM), an umbrella body of over 40 farm unions, led the 6 am-4 pm protest today against three controversial farm laws. The group had said they will not allow movement on some sections of national highways. Among them, near the national capital was the Kundli-Manesar-Palwal Expressway, which saw a massive traffic jam as farmers called a nationwide shutdown to protest one year of the contentious farm laws. But the protesters insisted emergency services weren't affected.