Corpcoracies often wonder why people don't trust them. The answer has much to do with the fact that they set the wrong incentives - most of the time, incentives are only put in place to reinforce one strategic goal: profitability. Then they wonder why people think they're evil.
Here's an example: a CNN exec producer is caught trying to plant a question at (of all things) an election debate. Here's a Post article about it.
It's interesting to note that CNN doesn't really think this is a big deal - this tells us (among other things) how little strategic value they place on trust. In typical beancounter style, they think their oligopoly will last forever. Obviously, it won't. (Via MetaFilter).