I found this fascinating quote today:
WASHINGTON – An elderly gunman opened fire with a rifle inside the crowded U.S. Holocaust Memorial Museum today, gravely wounding a security guard before being shot. Authorities said they were investigating a white supremacist as the suspect. The assailant and his victim were both hospitalized, said Washington Mayor Adrian Fenty, who added that the gunman was in critical condition. Police Chief Cathy Lanier said the gunman appeared to have acted alone. He was "engaged by security guards immediately after entering the door" with a rifle, she said. "The second he stepped into the building he began firing." One law enforcement official said James Von Brunn, a white supremacist, was under investigation in the shooting, and a second official said the elderly man's car was found near the museum and tested for explosives. They spoke on condition of anonymity, saying they were not authorized to discuss the investigation. Von Brunn has a racist, anti-Semitic Web site and wrote a book titled "Kill the Best Gentile." In 1983, he was convicted of attempting to kidnap members of the Federal Reserve Board. He was arrested two years earlier outside the room where the board was meeting, carrying a revolver, knife and sawed-off shotgun. At the time, police said Von Brunn wanted to take the members hostage because of high interest rates and the nation's economic difficulties. The museum houses exhibits and records relating to the Holocaust more than a half century ago in which more than six million Jews were killed by the Nazis. It is located within sight of the Washington Monument. The museum, which draws about 1.7 million visitors each year, was closed for the day after the shooting, and nearby streets were cordoned off by police. Surrounding roads were closed at least temporarily and blocked off with yellow tape. Police cars and officers on horses surrounded the area. At the White House, just a few blocks away, press secretary Robert Gibbs said he informed President Barack Obama of the events and the chief executive was "obviously saddened by what has happened." The museum normally has a heavy security presence with guards positioned both inside and outside. All visitors are required to pass through metal detectors at the entrance, and bags are screened. Linda Elston, who was visiting the museum, said she was on the lower level of the museum watching a film when she and others were told to evacuate. "It was totally full of people," Elston said. "It took us a while to get out." She said she did not hear any shots and did not immediately know why there was an evacuation. The experience left her feeling "a little anxious," she said. A museum official said a couple of thousand people were inside the facility when the shooting broke out. Museum shooting suspect has supremacist links , Jun 2009
You should read the whole article.