Watch two or three. It accumulates. I like the one in Sondrio, Italy bt I'm influenced by kd laing in the background singing Hallelujah, and by the Oscar Wilde quote at the end, which, to me, is what this whole campaign is about.
You might have to go to YouTube to see them. It's worth it. And then, once you're on YouTube, if you put Free Hugs into the search engine, up will come videos of people all over the world doing this. The one from Jaffa, Israel wouldn't embed. It's worth watching there, where the people doing it explain that peace is just a hug away.
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It started as an AIDS education campaign
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and became its own world-wide entity.