Bill Gates launches Global Citizen initiative at Facebook in London

The video encourages viewers to join Global Citizen and learn about global issues. It introduces speakers like Bill Gates and RFC, and welcomes attendees to the event.

What is the purpose of visiting globalcitizen.org?

What does it mean to become a global system?

What are some issues that one can learn more about?

How does the speaker feel about the event?

Who is welcomed onstage during the event?