'In 2021, slashings and stabbings were up more than 1,000 percent from 2011. In 2019, ProPublica found that McKinsey had “rigged” its violence-reduction numbers. (McKinsey denied this.) And in May 2022, New York City stopped using McKinsey’s system for classifying detainees. In the end, the city spent $27.5 million on McKinsey’s services, with precious little to show for it. McKinsey, on the other hand, collected its money and moved right along.'

https://www.thenation.com/article/society/mckinsey-whistleblower-confessions/?ref=thebrowser.com