FBI vs Yassir Afifi

Just read an article where a lad, one Yassir Afifi, discovered a GPS tracking device on his car that was supposedly placed there by the FBI. Apparently Yassir was getting his oil changed when the device was discovered and removed by the technician. Whether this is a violation of Yassir's civil rights, I would not know. The fact that such a device was so easily discovered during an oil change reinforces my belief that the FBI is not staffed by real cops. I don't think I am alone in thinking this.