China, China, China, Why is it always about China.
An article in the New York Times about yesterdays stock tumble (unwittingly) lays out how China's bureaucratic medaling in their economy is going have consequences far beyond Shanghai. 
1) Its obvious that the government’s  actions caused yesterdays stock drop because when they announced a reversal, the market  rebounded. The Communist government  originally tinkered with the market, I believe, to stop the spread of capital inflows. The Shanghai market lists mostly companies  that the government has a majority stake .  If investors are gaining a larger and larger share of "their" companies it can only lead to political liberalization, which prompted them to take action. 
2) They have manipulated their currency on  a massive scale. 
“The  Chinese government has limited the appreciation of the country’s currency, the  yuan, by buying dollars on a massive scale. As a result, it has accumulated more  than $1 trillion in foreign exchange reserves.”
3) The currency manipulation has over  inflated the market (this makes a bubble burst more painful) and caused the economy to be dependent on exports to the  
“To pay for  the dollars, the Chinese central bank has issued hundreds of billions of yuan.  The central bank has been able to absorb some of these extra yuan by selling  more government bonds to Chinese banks and the public. But part of the extra  cash issued to pay for currency market intervention has made its way into the  financial system. This has contributed to steep rises in stock prices — the  
“But the region  remains dependent on exports, especially to the 
4) We are now dependent on their  money.