No, that's back to front, you have 6 mogul news and media outlets, and very rich families in private corporations run these, the banking system and the government.
Governments can attempt to control their image and the perceptions of their policies and actions via press releases, speeches and spin. But since - in democratic countries - they don't own the media, they can't control it.
The proper job of media is to present all sides of every significant issue. However, because media moguls tend to be capitalist tycoons, most tend to subtly favor the conservative point of view. A small number have a slightly more left agenda, in the sense of favoring social safety nets. Neutral media outlets are rare, but Reuters is one which has been reliable since 1851.
Governments have countless ways of controlling information, mainly through tight restrictions on where and how data is kept and who can access it. However, no government can control all humans, and therefore leaks occur.
There can be sound reasons for keeping some knowledge restricted. But corrupt and dishonest people will always attempt to hide their associations, records and actions. For this reason, journalists and publically funded investigative offices have an essential role to play; ideally, they are like the B and T cells that seek out and kill disease before it can multiply.
A lot of government data is always available as open source information, but many people either don't know they can Google it, or don't realize its importance.
If you're serious about the letter, yes. You can friend me if you like. Send the letter via aM message, and I'll post back the edited version. Sounds like an interesting exercise! :)