I don't know that can answer that directly. However, I attend 25 + hard rock out door music festivals a year all over the Unites States. I have been doing this for the past 7 years. The average attendance is usually around 15000 people give or take. At every singe one of these festivals there are usually a hand full of kids with "free Hugs" written on their shirts or chests, or they have signs saying this. I see them get lots of hugs and have never seen anyone have a problem with it. With that being said I would imagine as long as it is the proper setting it would be OK but i do not know how it would do if you were just randomly walking the streets offering free hugs. I know this dose not exactly answer the question but I hope it helps :)
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