Parenti mainstream media tends to generally be professionally objective none of these biased toward corporate state policies, large corporations which tend to be lapdogs of plutocracy professionally free, objective, unbiased, independent watchdogs of democracy

I believe the answer is: large corporations which tend to be lapdogs of plutocracy

Plutocracy refers to high position government officials and the wealthy upperclass. Mainstream media tend to receive a lot of funds from these plutocrats to change the narrative that is hold by the people in order to support a certain political condition.