1 of 2 | Richard Zachary Ackerman, 22, pleaded guilty Thursday to charges stemming from the Jan. 6, 2021, attack on Congress. Photo courtesy of U.S. Justice Department April 11 (UPI) -- A New Hampshire man linked by federal authorities to a neo-Nazi group admitted Thursday to participating in the Jan. 6, 2021, insurrection during which he stole a police riot helmet he had described in boast as a "war trophy." Richard Zachary Ackerman, 22, of Salem, N.H., pleaded guilty Thursday to two charges of civil disorder and theft of government property, according to court documents filed in the U.S....