The 7th circuit appeal court has just considered the case of Joseph Doornbos. This case highlights some of the important things for residents of Chicago to consider when they are stopped and searched. It specifically looks at pat-downs and whether the police have to have reasonable grounds for suspicion before they act.
In this case, the search was done by law enforcement agents that were not in uniform (plain clothes agents). They confronted the suspect and tackled him to the ground as he was leaving a train station. Later on, they charged him with resisting an arrest, but he was acquitted on that charge.