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Campus protests over racial issues continue to spread -- and on Wednesday led to a revived debate at Princeton University over the legacy of Woodrow Wilson and the use of the word "master" to describe those who lead residential colleges.

By the end of the day, "master" was retired from use at Princeton (at least in that form of the word). Students took over the president's office to demand that Woodrow Wilson's name be removed from the many places it appears on the Princeton campus, which Wilson led before he became president of the United States.

Both the university's decision to stop using "master" and the debate over Wilson captured widespread attention on social media, with the university and the protest leaders receiving both praise and criticism.