As Media Matters for America has detailed, Liddy served four and a half years in prison in connection with his conviction for his role in the Watergate break-in and the break-in at the office of the psychiatrist of Daniel Ellsberg, the military analyst who leaked the Pentagon Papers. Liddy has acknowledged preparing to kill someone during the Ellsberg break-in “if necessary”; plotting to kill journalist Jack Anderson; plotting with a “gangland figure” to kill Howard Hunt to stop him from cooperating with investigators; plotting to firebomb the Brookings Institution; and plotting to kidnap “leftist guerillas” at the 1972 Republican National Convention -- a plan he outlined to the Nixon administration using terminology borrowed from the Nazis. (The homicide, firebombing, and kidnapping plots were never carried out; the break-ins were.) During the 1990s, Liddy reportedly instructed his radio audience on multiple occasions on how to shoot Bureau of Alcohol, Tobacco, and Firearms agents and also reportedly said he had named his shooting targets after Bill and Hillary Clinton.