David W. Hedrick called for privatizing Social Security at a candidate forum aired by Oregon Public Broadcasting’s “Think Out Loud” program Thursday. Four candidates for the open 3rd Congressional District seat — Republicans Hedrick, David Castillo and Jaime Herrera and Democrat Denny Heck — took part in the hourlong group interview, which came just five days before Washington’s Aug. 17 top two primary. Hedrick, a Tea Party activist, called Social Security “a pyramid scheme” and questioned whether the program, created by Congress in the throes of the Great Depression, was even constitutional.“We have to take people in the future off Social Security and put their money in private investments,” he said.Asked by moderator Dave Miller whether he would be “scared” to entrust his retirement nest egg to the private investment market, Hedrick said he’d be scared to have it tied up in government. He said providing a social safety net for any group is beyond the scope of the federal government’s role as defined in the Constitution.“David may think he’s smarter than the people in the 1930s who set up Social Security,” quipped Castillo. Those people decided the program was constitutional, he said.Castillo said he favors federal entitlement programs such as Social Security and Medicaid for people who need help making ends meet. He noted that his own family relied on public assistance when he was growing up in Centralia.