The US government has admitted that it uses predictive assessments to put people on the no-fly list:
In a little-noticed filing before an Oregon federal judge, the US Justice Department and the FBI conceded that stopping US and other citizens from travelling on airplanes is a matter of "predictive assessments about potential threats," the government asserted in May.
When you have a secret process that can judge and penalize people without due process or oversight, this is the kind of thing that happens.
