They need a lesson in common sense.

New York University kids are whining that Washington Square Park has lost its charm now that the cops have evicted all the druggies and vagrants — even as one of their own was randomly attacked by a violent hobo this week near the green space.

“With the local unhoused community now almost entirely displaced, a once vibrant park is now characterized by an uncanny stillness,” reported the student paper, Washington Square Park News .

Students at the $60,000 a year school drew the message, “Where are our neighbors?” in chalk on the park’s walkways, fondly referring to the homeless junkies who’d become unwanted fixture of the park’s infamous northwest corner .

“I feel like a large community is gone,” first-year student Caspin Berklee, who regularly sp

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