Why is it common for people to poop, pee, masturbate, and inject/smoke/snort fentanyl, methamphetamine, and forms of cocaine in public in the USA?

Why do I see this almost everyday? I live in the USA (New York City) and this is just our culture I guess but is this normal in your country?

Why is it common for people to poop, pee, masturbate, and inject/smoke/snort fentanyl, methamphetamine, and forms of cocaine in public in the USA?
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