A few months ago a woman was harassed over a crime she did not commit, by a police officer using her vehicle driving in a large general area as proof she committed the crime. Officer demanded she admit to a crime she did not commit.
Additionally, the surveillance apparatus enables parallel reconstruction. When law enforcement gathers evidence via illegal means, they can then use the drag net to find cause to detain/search unrelated to the original crime, in order to have cover to gather evidence they illegally gathered prior, aka a loophole for civil rights.