Uber Fires More Than 20 Employees in Harassment Probe

The video discusses an investigation into Uber's workplace culture, initiated by a blog post from former engineer Susan Fowler. The investigation, led by law firm Perkins Coie, uncovered numerous allegations of sexual harassment. A parallel investigation by former U.S. Attorney General Eric Holder aimed to provide recommendations to Uber's board. As a result, over 20 employees were terminated, with more than 50 investigations still ongoing.

What is the main difference between the investigation conducted by the law firm and the one led by Eric Holder?

How many people have been terminated as a result of the investigation mentioned in the text?