But Roeder's violent right-wing extremism seems to extend beyond the issue of abortion. In April 1996, amid anxiety over the anniversary of the Oklahoma City bombing, Roeder was stopped by police after a motorist reported seeing a car with a license plate reading: "Sovereign -- Private Property -- Immunity Declared at Law --Non Commercial American."
("Sovereign citizens" claim to be unaccountable to the federal government, deriving certain rights under English common law. It's been a favored legal strategy of various violent right-wing extremists, including white supremacists.)
When police searched Roeder's car, they found the makings of a bomb: a blasting cap; two six-volt lantern batteries, one wired with a clothespin and a cigarette wrapper; and a 1-pound can of black gunpowder. In Roeder's home, police found instructions titled "Underground Cookbook: Clothes Pin Time-Delayed Switch."
Roeder was listed by the FBI as a member of the freemen group, which at the time of his arrest was locked in a standoff with federal authorities near Jordan, Montana. (Many freemen also used that license plate tag.) Roeder was ultimately sentenced to 16 months in prison for violating his parole, but the conviction was tossed out after a court found that the evidence against him had been illegally gathered.