Re: Can they not use their powers for good?
"GCHQ could redeem themselves by spying on bankers and bringing a few to justice."
Or maybe just reveal what they now about Westminster paedophile rings (apparently now including alleged murders?) dating back as far as Cyril Smith, and as far back as the era of Jeremy Thorpe and maybe further.
Or Jimmy Saville.
Sorry GCHQ, you lose. Same goes for the police. Undercover police spying on peaceful protest organisations, police in general fiddling with evidence, from the Birmingham pub bombings via Hillsborough to Ian Tomlinson, dodgy phone "hacking" inquries promptly followed by the inquiry leader getting a job with the paper in question, etc, etc.
If these people want the public on their side (which currently appears to be dubious) they need to be seen to play a fair game.