One tweet can go a long way.

One Washington, DC mom proved it at this Saturday's March for Our Lives demonstration.

On February 18, Elizabeth Andrews offered to help locate free housing for students and their families traveling to the capitol for March for Our Lives. At the time, she barely tweeted.

However, you don't need to be famous or have a vast social media following to go viral. And you definitely don't need to be a celebrity to enact social change. CNN reports the tweet inspired ten other mothers to reach out and help. This weekend, the group—who formed March for Our Lives Lodging—helped provide accommodations to over 500 students. The group's goal was to reduce barriers to attending the event, whether the obstacles were related to cost or not.

Over 1,600 local families donated 5,000 beds to the cause this weekend.

Other companies, including Lyft, jumped on the bandwagon to provide free services to those traveling to the march.

As a result, the protest brought out so many attendees that it (of course) outnumbered Trump's inauguration attendance.