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>>And, of course, people camping out in a public park for days or weeks are more likely to leave trash, have to deal with human waste, and cause damage (even inadvertently) than people coming together to rally for a few hours.
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>
>I'm not even sure that's the case. Earth Day activities were marred this year with huge reports of people leaving trash/waste all over the place.

I'm not saying that people can't be slobs at any time, but when people are living in a place that's not designed for it, problems are more likely.

Tamar