Commodities are lit up bright red as weak economic data (here and in China) is a good excuse to end the bounce of the last few sessions. Gold (GLD -1.8%), Silver (SLV -3.6%), WTI Crude (USO -2.6%). Copper (JJC -3.3%) moves to its lowest level in about 18 months at $3.08/lb. The metal hasn't had a 2-handle since the start of 2011. Broad commodity gauge (DBC -1.8%).