Origins of Identity Politics

[From article]
Shattered Consensus: The Rise and Decline of America's Postwar Political Order by James Pierson may be one of the best books ever written on American political history. It traces the evolution of both political parties from the aftermath of World War I to the present.
[. . .]
Out of the tumultuous 1968 Democratic Convention in Chicago, the Democratic Party institutionalized identity politics based on grievance along with anti-Americanism – that is, the United States was and still is responsible for all of the problems in the world both at home and abroad.
[. . .]
The IRS scandal of targeting conservative groups represents how they've taken another step in weaponizing the machinery of government for political purposes.

http://www.americanthinker.com/blog/2015/09/the_origins_of_extreme_political_polarization_and_who_is_responsible.html

September 6, 2015
The origins of extreme political polarization, and who is responsible
By Tim Jones