The relationship between the media owner their relationship isn't strictly with people and audiences. It's also with advertisers and that's the most relationship in radio in fact it pays the bills.
It can have a secular purpose and have a relationship to God because God was presumed to be both over the state and the church and separation of church and state was never meant to separate God from government.
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Yes I think it's really important to acknowledge that Dr. King precisely at the moment of his assassination was re-conceptualizing the civil rights movement and moving toward a sort of coalitional relationship with the trade union movement.