Why this all needs to stop.
If GCHQ use mass surveillance to influence politicians or judges then it will never stop.
If politicians and judges allow this to continue it could result in a situation where they do get influenced.
On those grounds alone and in the interests of a free democratic society that is not run by people using knowledge gained with these powers it needs to stop.
Why does anyone in power not see this or is it because it already happens?
Are we too late?