There were protestors in front of Goldman Sachs’ offices in Manhattan yesterday who were angry with the bank for a purchase it made. Goldman bought $2.8 billion worth of Venezuelan bonds from the state-owned oil company through a broker. It struck a real bargain, too, getting them for 31 cents on the dollar. That means the bank stands to make more than $2 billion. But that high-risk investment has stirred plenty of criticism. 

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