Facebook lists and tracks users it considers security threats

Fame has its price, as many high-profile personalities can attest to. In addition to dealing with both love and hatred, there's also the matter of potential threats to their safety. That's true for both a single person and a large company, especially one that's both famous and infamous like Facebook. But while most other companies have to take a reactive stance, Facebook tries to be one step ahead of danger by putting its own users in a "Be On Lookout" or BOLO list of people whom it perceives as a potential threat to the safety of its employees and offices.