Re: Who cares?
The example I always give is the murder of Stephen Lawrence. His family started to embarrass the Met because of the lack of progress in the investigation. Their response was to send an undercover officer not to further the murder investigation but to discredit his family. http://www.bbc.co.uk/news/uk-26466867 With things like mass surveillance in place it will be much easier to dig up something embarrassing while perfectly legal or put things out of context to achieve the same aim. This is all about power protecting itself at the expense of ordinary people.