TPM’s Eric Lach took a deep look at the history of the semi-automatic rifle used in last week’s Connecticut elementary school massacre.
Nick Martin is an associate editor at TPM in New York City. He came to the site in 2011 as a reporter for TPMMuckraker. Previously, he worked in Arizona, first as a staff reporter for a local newspaper and later as a freelance journalist. He also ran the news blog Heat City. Contact him: nick [at] talkingpointsmemo.com