Possible manipulation on the stock market by US government?

Usually I tend not to write about this kind of speculative thing, but I find this rally fishy and evidence presented by zerohedge, although circumstantial, shows most of the rally since September 2009 has taken place in the after hours. The data might be coincidence, but yes, the US government boosting stock prices through buying futures would be a perversion of government intervention in free markets and this is showing the world that the stock market can be gamed through the futures market.

The world has believed that investing is something that is based on the performance of companies and economies. If they have to account for whether or not the government will buy or sell futures to game the market, then basically they will have wrecked decades of faith and trust by the public in markets. More people will know that the market is really a gamble and investing will have become a thing of the past. Why would people invest in the market if they know that it can be manipulated?

Of course, this after hours manipulation might just be nothing but an anomally but hopefully this thing gets sorted out or people will just lose faith.