There are two aspects to Trump's relationship with American Big Corporate Media. 
1) Before but especially during the campaign, Big Media tried their hardest to screw Trump. To the point of creating fake news that resulted in degrading their reputation to the public. 
2) After the election Big Media is today a willing partner with the Deep State to trying to overthrow the Trump regime. It cooperates with Intelligence elements, accept and broadcast all kinds of fake stories to push the Deep State agenda of war and continue elite control of state Instead of reporting factual news they wrap stories to  compromise everything Trump does. This is what Trump meant when he said the media is enemy of the people. The media is partner to effect a regime change on Trump. Who know where this will lead to? JFK 2?

That does not mean Trump have not made mistakes or his hands are clean. The two are now mortal enemies and they deserve each other.