Just thought to add a personal experience, here:

The WTO riots in Seattle, popularly known as "The Battle for Seattle." Us left-wing whackos like to chalk it up as a victory.

The news reported, fifteen minutes after the event, that the police used tear gas to disperse rioters.

They must have a different definition of "rioter" than I do. They first used tear gas on people who were sitting down with their arms linked. This is a riot? Christ, we're mellow in Seattle, but a bunch of people sitting down is not a riot.

Open, blatant, bald-faced lie.

And no, it was not picked up on by any of our supposed "checks and balances" in the press.