Haryana's many "khaps" on Sunday decided to join agitating farmers' "Delhi Chalo" call and march to the national capital to support their protest against the three central farm laws. The decision was taken in a meeting of the chiefs of 30 "khaps" (caste councils) in Rohtak, independent MLA from Haryana's Dadri constituency Sombir Sangwan, who also heads the "Sangwan Khap", told PTI over the phone.