Also, the medical staff are irradiating you for the direct purpose of aiding you specifically. The police are irradiating you because they've decided you are by

Also, the medical staff are irradiating you for the direct purpose of aiding you specifically. The police are irradiating you because they've decided you are by default a suspect worthy of search simply by virtue of passing by - the benefit you receive in return for any health risk is debatable at best.