From the video's description on YouTube:
On January 23, the entire student body of Christendom College, including members of the faculty and staff, led hundreds of thousands in protesting abortion at the 39th Annual March for Life in Washington, D.C. Select students were given the honor of carrying the lead March for Life banner as well as the official March for Life flags.
You can learn more about Christendom College at their website. Also check out Christendom's YouTube channel.
(I found this video at Creative Minority Report.)