Northern Light, I'm in general agreement with you that I don't support walled, closed parks as is common in Europe or Asia. These parks tend to be nicer and programming better in the kind of intense investment design programmed way that is appealing to many people on this forum but they are as you say not really congruent with the general social ideas in our city.
That being said I don't agree that freedom of user activity is non-exclusionary. Users of parks exclude others by using the space. Your concern it seems is that marginalized people would be further marginalized by entry enforcement. That is probably true. On the other hand marginalized people also exclude others by making them not comfortable to use the space.
I have a laissez-faire attitude to this, that park users must carve out and create their own balance. This process however is not neutral. It involves confrontation and occasional enforcement and I can understand that there is a silent majority unwilling to participate. That's why programmed, controlled, and regulated spaces are probably more popular.
@TrickyRicky you have a 'conversation' pending.
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On the subject of the above, I will share that friends who live in the affluent Detroit area of Grosse Point shared w/me that they have security at one (or all?) of their parks, and that you have to show ID proving you live in Grosse Point to gain admission to the park.
That does more than deter someone who may be homeless (which I do see as a problem); it deters many people who will feel imposed upon and outright prohibits someone who doesn't live in that area from using that park.
That to me is awful and sounds completely contemptible.
In respect of those who may be homeless etc.
I'm not opposed to policing inappropriate use of a park. Though, I don't think someone taking a nap on a lawn should necessarily be assumed to be homeless or even doing something wrong.
But I would prefer to see that any action not prohibit entry to a park, or responsible use of a park by anyone.
I would also prefer any 'inappropriate' use be address by social worker outreach, or by offering appropriate alternatives (ie. if you want someone to use a washroom rather than a bush, make a washroom available).
To me that's not merely kinder, its also provides better infrastructure (everyone gets use of the washroom); and its cheaper (helping house someone properly is invariably cheaper than hostels, or jails) .