At least from a US perspective, it's worth reading up on the Hearst newspapers. That whole Pancho Villa v. Pershing ...thing? Hearst. Granted, this is not the

At least from a US perspective, it's worth reading up on the Hearst newspapers. That whole Pancho Villa v. Pershing ...thing? Hearst. Granted, this is not the 24 hour news cycle but there are numerous examples of newspapers drumming up panic.