Rash of 'knockout' attacks has some New Yorkers worried

(WCBS) There were warnings Friday about a possible upsurge in knockout attacks in which people are sucker punched for no good reason.

Video of one such incident shows a woman being suddenly kicked and then punched by a man. She was knocked out cold on the ground, but rather than help her several people took out phones to take pictures.

Nobody called the police.

Here's the real story about black-on-white violence in America, and it's not pretty, in "'White Girl Bleed a Lot'"

It happened in Pittsburgh more than a month ago, and something similar happened in Brooklyn on Thursday night.

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“As he went to tie up his dogs to confront these kids, the group distracted him from the front and then one came up behind him and hit him in the head,” a witness said.

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