The Metropolitan Police Department in Washington, DC, arrested dozens of people, including for assault on police, after a skirmish between officers and a group that law enforcement had cleared from an encampment on campus Wednesday, a police source told CNN. The action took place hours before Washington Mayor Muriel Bowser and George Washington University President Ellen Granberg were set to testify before Congress on the response to the encampment. The source said that MPD has been planning to...