For the millions of visitors who come to Washington, DC, one of the most popular destinations is Lafayette Park, across from the White House. There's no longer vehicle traffic on Pennsylvania Avenue in front of the President's house, but you can often find a crowd on the street, most having fun or taking pictures. Since 1981 there has also been a peace vigil on the spot, 24-hours a day, 7 days a week. You can't miss it. To find out how it all works, we talked with a veteran of the anti-war, anti-nuclear protests – a man who has been there for close to 40 years – Philipos Melaku-Bello.

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