What does the information revealed via the Snowden leaks tells us about the nature of contemporary intelligence collection.

how important the revelation?

what happened as a result of the leaks?

Has government passed legislation to make these things legal?

Exposed demographic deficit?

-public discussion and law and how they kept in pace

-press

Edward Snowden-traitor or hero??

Also. on this essay i have to include these 3 sources : 

Intelligence in an insecure world-Peter Gill, Mark Phythian 2018

No place to hide: Edward Snowden, the NSA and the surveillance state: Glenn Greenwald 2015

A special forum/: Implications of the Snowden leaks (Loch K. Johnson, Richard J. Aldrich, Christopher Moran, David M. Barrett 02/11/2014)