Protests on the day of President Trumps inauguration were mostly peaceful, but over 230 people were arrested on allegations of rioting… and law enforcement appears bent on scouring their internet profiles for evidence. CityLab has learned that Washington, DC police have been asking Facebook for user account information as part of their investigations. And in at least one case, Facebook warned one of the targets — file a challenge to the data request or the company might have to co…Read more