NSA Classifies Linux Journal Readers, Tor and Tails Linux Users as “extremists”

No it doesn't: https://daserste.ndr.de/panorama/xkeyscorerules100.txt

    // START_DEFINITION
    /*
    These variables define terms and websites relating to the TAILs (The Amnesic
    Incognito Live System) software program, a comsec mechanism advocated by
    extremists on extremist forums.
    */

    $TAILS_terms=word('tails' or 'Amnesiac Incognito Live System') and word('linux'
    or ' USB ' or ' CD ' or 'secure desktop' or ' IRC ' or 'truecrypt' or ' tor ');
    $TAILS_websites=('tails.boum.org/') or ('linuxjournal.com/content/linux*');

Note the "and" correlating searches involving USB or CD or linux journal with 'tails' and the comment. There is no evidence there that the NSA considers all Tor users, all Tails Linux users or all Linux Journal readers to be extremists. Rather, it appears they consider Tails Linux to be a tool used by extremists and advocated on extremist forums. And they're not wrong about that.

This is disturbing. The term 'extremist' has changed from its original meaning denoting someone who advocates or engages in violent action in pursuit of a political cause.

Of late, it can be used merely to refer to someone whose views, or peaceful, legal actions differ from the mainstream to some degree. Under the newer usage, even the Mennonites and the Amish are potentially subject to the same blanket condemnation as neo-Nazis or ISIS.