also I disagree with saying it was "caused largely by negative news". based on what I have seen, negative news rarely causes a drop, they only intensify a drop. in other words if there were no drop in first place then the news couldn't create it.
The thing about news i noticed, they seem to be partially true. Major news appear when price is at a turning point, almost seems like the news drive the price further then the chart. That why is good to follow the information and pick it out of the trends, because is good to relate to something like the market sentiment imo.