Last Week Tonight takes on data brokers, with Duke's Justin Sherman

John Oliver draws attention to serious subjects with irreverent humor and made-for-TV stunts.  He made some people in Washington D.C. very nervous recently when his show, Last Week Tonight, took on the data broker industry and acquired sensitive information about people in and around the U.S. Capitol.  The segment featured work by Duke's Justin Sherman, who recently authored a paper titled "Data Brokers and Sensitive Data on US Individuals." Here, Sherman talks about work with Last Week Tonight, and about the data broker problem.