BOSTON–Chanting “hands off” and “no cuts,” hundreds of seniors rallied here to warn Congress’s deficit-cutting supercommittee to stay away from Social Security, Medicare, and Medicaid. “When you get older, you need help, not cuts,” said Steve Ciardi, a former pipe fitter who has multiple sclerosis and was in a wheelchair being pushed by his wife, Patty. “That is what the country is about – helping people,” she said. AARP Massachusetts, the SEIU and AFL-CIO labor unions, and several senior activist groups are organizing the event, which kicked off this morning with a rally at the historic Wang Theatre in downtown...