The Transportation Security Administration (TSA) is apparently blocking certain websites from the federal agency’s computers, including Internet sites that contain a "controversial opinion," according to an internal email obtained by CBS News.
The email, which was sent to all TSA employees from the Office of Information Technology on Friday afternoon, said that as of July 1 TSA employees would not be allowed to access websites that have been deemed "inappropriate for government access" in five different categories. These categories include chat or messaging, "controversial opinion," criminal activity, extreme violence (which apparently includes cartoon violence) and gaming.
The email doesn’t apparently define what a lot of this content is in particular and it most certainly doesn’t mention web sites by name, though I would imagine sites with strong opinions about the government are on that list. The email did say that some of the restricted web sites violate the "Employee Responsibilities and Conduct policy."
Source: CBS News