A Guardian front page headline today illustrates how media organisations propagandise day in, day out, even through the use (or not) of punctuation:
Obama regrets drone strike that killed hostages but hails US for transparency
That should have read:
Obama ‘regrets’ drone strike that killed hostages but hails US for transparency
The subtler the technique, the harder it is for us to understand that we are being manipulated; the more effective the propaganda, the harder it is to inoculate ourselves against it.
That is why the Guardian is the best in the business.