Assume that police suspect Anne Smith of murder and they had DNA evidence at the crime scene that likely belongs to the killer. Law enforcement does not have adequate probable cause to obtain a search warrant to acquire Ms. Smith to produce a DNA sample, but they do know that her brother does not like his sister and would gladly provide a familial DNA sample if asked. DNA samples of people who are related are likely to contain similarities. If the police obtain a DNA sample from her brother even though they have insufficient evidence to implicate Ms. Smith, explain why this procedure might concern civil rights advocates.