Lawmakers Push Investigation of Unidentified Federal Troops in Oregon

The video discusses the controversial actions of unidentified federal troops in Portland, who have been arresting protesters without explanation. This has led to calls for a federal investigation by US Attorney Billy J Williams, Oregon senators, and US representatives. Political leaders, including Oregon Governor Kate Brown and Portland Mayor Ted Wheeler, have criticized President Trump for prioritizing political theater over public safety. The ACLU has filed a lawsuit to prevent federal agents from using force against journalists and legal observers. Despite the criticism, Trump has praised the federal officers' actions. Protests against racial inequality and police brutality have continued for 50 nights, with federal officers charging several protesters with crimes.

What lawsuit did the American Civil Liberties Union file in response to the actions of federal agents?

What were the reasons for the protests in Portland over the past 50 nights?