Traders/Investors move the market - News is only an indirect reason.
We often read and hear interviews in the news where some guy predicts Dow will go to, for example, 5000 or 15000. These predictions are often based on looking at a macro economy such as GDP, unemployment rates, interest rate and so on. Other predictions are based on computer programs which run a lot of mathematical calculations. If predicting where the market is heading was that easy we would see a lot more successful traders than what we are seeing today.
What people cannot or will not realize is that trading is simply a numbers game. It is about having an edge by looking at some patterns that over a series of trades gives a positive outcome. These patterns could be what happens around news of specific significance or it could be more technical such as chart patterns; triangles, flags and so on. It is then up to the trader to follow his or her plan and take every trade accordingly. By trading this way the trader is acting on current events and using the supply/demand to take money of the market as supply/demand is the only thing that moves the market. It is not news or predictions but traders/investors that move the market. News etc is what makes the traders/investors either buy or sell. So the trader should look for patterns that give him/her an idea whether supply or demand is in excess.