Some hyperbole in your telling of the story and failure to mention that he was awarded restitution. According to Wikipedia:
Brandon Mayfield (born July 15, 1966) is a Muslim-American convert in Washington County, Oregon, who was wrongfully detained in connection with the 2004 Madrid train bombings on the basis of a faulty fingerprint match. On May 6, 2004, the FBI arrested Mayfield as a material witness in connection with the Madrid attacks, and held him for two weeks, before releasing him with a public apology following Spanish authorities identifying another suspect.[1] A United States DOJ internal review later acknowledged serious errors in the FBI investigation. Ensuing lawsuits resulted in a $2 million settlement.
https://en.wikipedia.org/wiki/Brandon_Mayfield
What point are you trying to make with this example?