I read a comment elsewhere that the strife is between the people on the left side of the iq bell curve, and those on the right.
Steelworkers and blue collar jobs, left side, mostly, while those in upper management that ship the jobs elsewhere in search of arbitrage are on the right side. Lobbyists and pols, right side, that rejiggered the export and import laws to benefit the right side.
Wondering what others think of this explanation...