"According to the figures released by the Federal Bureau of Investigation (FBI), the estimated number of violent crimes in 2011 declined for the fifth consecutive year. The 2011 statistics show the estimated violent crime rate decreased 4.5% decrease from the 2010 rate. However and according to the latest known statistics from the Bureau of Labor Statistics (BLS), from 2006 to 2010, an average of 551 workers per year were killed as a result of work-related homicides. In 2010 (the last year for which final data are available), there was a reported total of 518 workplace homicides, or 11% of all fatal work injuries that occurred that year. Shootings accounted for 78% of all workplace homicides in 2010 (405 fatal injuries). More than four-fifths (83%) of these workplace homicides from shootings occurred in the private sector, while only 17% of such shootings occurred in government. Five percent of all establishments in the United States experienced a violent incident in 2005, and half of the largest establishments (employing 1,000 or more workers) reported at least one incident. No workplace is immune, and any government facility can serve as the setting for an incident of workplace violence. The April 1995 attack on the Alfred P. Murrah Federal Building in Oklahoma City provides an extreme example of how an office setting can be affected by workplace violence, in this case terrorism. This single act killed 168 people, injured 800 more, and was the largest terrorist attack on American soil prior to the September 11, 2001 attacks. It remains the most deadly terrorist attack ever perpetrated by an American citizen on American soil."
Department of Homeland Security: http://www.dhs.gov/