[an-tee-i-stab-lish-muh nt, an-tahy-]
  1. opposed to or working against the existing power structure or mores, as of society or government: Antiestablishment candidates promised to disband the army, Congress, and the cabinet if elected.

Origin of antiestablishment

First recorded in 1955–60; anti- + establishment Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

Examples from the Web for antiestablishment

Contemporary Examples of antiestablishment