And I wonder what, if any laws, he could have possibly broken in amassing his undoubtedly HUGE stockpile of "final solution implements"?

To the shock of ABSOLUTELY NO ONE (except the assholes who bet it was an Islamic Extremist) the guy who shot up a Jewish Community Center and killed three people was a KKK Member and White Supremacist.

According to the law center, Miller has been involved in the white supremacist movement for most of his life. He founded the Carolina Knights of the Ku Klux Klan and was its "grand dragon" in the 1980s. The Army veteran and retired truck driver later founded another white supremacist group, the White Patriot Party, the center said. Miller was the subject of a nationwide manhunt in 1987 for violating the terms of his bond while appealing a North Carolina conviction for operating a paramilitary camp. The search ended after federal agents found Miller and three other men in an Ozark mobile home, which was filled with hand grenades, automatic weapons and thousands of rounds of ammunition. Miller tried running for U.S. House in 2006 and the U.S. Senate in 2010, espousing a white power platform each time.

I lived for a time in Overland Park when I was a kid -- one of the biggest suburbs I have heard of, it has a population the size of the City I know live in Des Moines. It also had a large and vibrant Jewish Community. In fact, it was the place where at the age of five I became aware of what Jewish people were.