The media have a significant role on the way economics evolve, because expectations are very important to influence the levels of consumption and investment. So, if they are saying the economy is great then people will trust that information and be stimulated.
Almost every single country is "lying" to their citizens about the fact that the economy is great and doing well, it is doing fine when compared with the recent crisis, but it still has a lot of problems, and many of them are being ignored intentionally.