Even assuming that the government has all of the capabilities you outline, you don't explain how the government would use these capabilities to significantly change the current struggle with subversive groups
Same complaint for you saying they don't change anything - you don't explain why you think it wouldn't - in terms of how the use of them wouldn't change anything.
However, on my side - the uses should have been obvious:
- identify dissenters through automated keyword alerts from the internet; or
- identify dissenters through their involvement with forums / websites that promote dissent, with auto keyword searches to make things easier (if it is a 'moderate' site)
- Identify their IP & ISP, and obtain details (not exactly necessary at this point if user maintains same browser fingerprint)
- if mass data surveillance, solidify how much a threat they pose through automated key word searches of their history,
- if no mass data, obtain metadata from ISP's and identfy platforms they use for communication with others
- obtain from those platforms (presuming you already put in place agreements with them so that they can operate in your country) their contacts
- conduct automated searches of their contacts, and see if their contacts are saying similar things (presumably through more detailed search parameters)
If concern still exists:
- check their bank accounts for suspicious activities (this is easier if you can do it online, rather than through search warrants etc)
- check their GPS movements to see if they are meeting up with other marked dissenters, or visiting places frequented by other known dissenters.
- if GPS isn't available for this, then check phone towers. wifi connective and card purchases
But as I said - most of that should have been easily able to be ascertained with a little thought about how they work in practicality.
And all of this can be done without leaving a desk (up to the point where an intercept is necessary, and then other surveillance kicks in). Traditional Surveillance cannot be done without leaving a desk. This of course isn't saying that traditional investigative techniques or surveillance aren't useful - there will always be a need for the human element.