anti-establishment

Opposed to the existing sociopolitical system (the establishment).

Japanese Meaning

既存の社会政治体制（権威や体制）に反対する / 現行の支配体制に反抗する、または批判する

The anti-establishment mural on the university wall sparked intense debate among professors.

大学の壁に描かれた反体制的な壁画は教授たちの間で激しい議論を巻き起こした。

Sense（1）

Opposed to the existing sociopolitical system (the establishment).

The hippies were noted for their anti-establishment ways, firmly opposed to the order their parents so revered.