Harvard University's alumni – nearly half a million strong – include some of the most powerful and wealthy people in the United States. Donations to their alma mater amount to hundreds of millions of dollars annually.

Harvard University President Alan Garber is asking alumni who want to support the school in its standoff with the Trump administration for three things: their attention, their voices and their money.

The event was organized by Crimson Courage, a newly formed alumni group that aims to back Harvard in its confrontation with the Trump administration.