I would say the Frankfurt School, since Adorno tried to claim that inaction is the highest form of praxis (Predicting the existence of the terminally online? /s) and the fact that they’re most famous for talking about popular culture (“the culture industry”).
Probably not what you were thinking of, but for me growing up, it was George Carlin.
He has some cringe content for sure, but he was also one of the few mainstream figures that used his platform to criticize consumerism, finance capitalism, US exceptionalism, inequality, US wars, mass incarceration, it’s treatment of the poor and minorities, reactionary religious attitudes.
He got up on a stage and talked about how we should have public executions of bankers responsible for financial crimes on TV during the half-time show of the super bowl. The only country brave enough to carry out that program now is China.