I know someone who was arrested by "mistake" by some zealot homeland security officer post 9/11
They were just in transit from one island to another [alot do not have direct flights so people go through Miami/NY/ATL], and was not even scheduled to be in the US for more than 3 hours. This person is a light skinned black West Indian, with no connection whatsoever to the middle east...but they look Arabic. They were "detained" under some section of the Patriot Act and held for a few days, no charges were filed nor was she ever accused of anything. They let her go, and she's been back through the US [transit] numerous times since, so obviously by allowing her re-entry they obviously do not think she is a legitimate threat.
Since that incident she has never been the same. A few 'bad things' happened to her in there. She is a shell of who she was before. She's completely paranoid most the time...being hauled off to jail for no good reason, plus the treatment she received in there just took her 'spirit'. It is sad to say the least.