Farm unions protesting against the three central farm laws have mobilised supporters to observe a nationwide ‘Black Day’ to mark 6-months of the farmers’ protests around the national capital. They plan to hoist black flags at protest sites at Delhi borders and many places across the country on Wednesday. Twelve parties have come out in support of the SKM’s call for observing Black Day. They include Congress, TMC, NCP, DKM, Shiv Sena, SP, JMM, RJD, CPI, CPI(M) and others.