The media are not being manipulated. That term infers coercion or pressure. There are media which lean liberal and media which lean right. And, a few which play both ends against the middle when it suits their purposes. Reporters, news reader, editors etc. all go with whichever narrative fits their viewpoint. The media can manipulate the news every bit as well, probably better even, than government agencies.
So called "investigative reporting" is driven by profit and biases. All media cannot be lumped into liberal or conservative, left or right, pro this nor anti that. If the publishers of the Washington Post had been conservative leaning, Woodward and "what's his name" would have written reports which would have appeared very differently in print. Edward R. Morrow was turned loose in London because his employers were pro-England. The American public was opposed to the war and Roosevelt needed the help of the media. He knew that the country couldn't be driven into a European war and had to be pushed towards what he thought was right.
Standard Oil, years ago, was humming along, not a care in the world, then one person with an axe to grind wrote a very biased series of articles which caused a public uproar. There were some truths and lots of great, steamy reading and it worked. The industry found itself broken up, tightly regulated, prices rose and we all were better off. Or, were we? Ida did well though. She invented "investigative journalism." She disliked the term "muckraker." And she did it because of her agenda, to raise her father's reputation. Rockefeller had obviously PO'd the wrong young lady. She had a good reputation as a journalist, writing about Lincoln and such, the muckraking made her reputation though. She accomplished some good, raised some prices, changed an industry and your perspective makes her a heroine or baddie. She waited nearly thirty years to start in on Standard Oil and wreck revenge for her father.
The press and the other mediums exist to manipulate as well as to inform. And they, like us when extolling or "bad mouthing" different brands do much the same. Some are more covert in their manipulation and others more shrill but, we all claim to be unbiased in our observations.
Neither the media nor governments march in lockstep, they use each other when it is to their advantage.
As an aside: Private (read: publicly held, owned by you and me) corporations are pikers when compared to the Government's pursuit of a dollar. Corporations do not, as a general rule, use the threat of jail time or armed agents to take moneys from you and I. Corporations, let's exclude banks and other lenders who operate under tight government regulation and law when enforcing contracts, provide product and we choose to give them our moneys, or not, through purchase of the product or shares.
Now I suppose I'm a "corporate stooge" for writing something a bit positive about corporations.