Richard Serra (with Carlotta Schoolman), Television Delivers People, (1973), also available on UbuWeb. YouTube poster erikabear puts it succinctly:

Produced in 1973, “Television Delivers People” is a seminal work in the now well-established critique of popular media as an instrument of social control that asserts itself subtly on the populace through “entertainments,” for the benefit of those in power-the corporations that mantain and profit from the status quo. Television emerges as little more than a insidious sponsor for the corporate engines of the world.