How often is that idea close to reality, and how often is it a fake call, a no-knock warrant, or some other bs? And are they actually taking great personal ris

How often is that idea close to reality, and how often is it a fake call, a no-knock warrant, or some other bs? And are they actually taking great personal risk? Police killed a bit under 1000 people in the US in 2016 and had around 150 officers die (with lots of this vehicle related). Seems like it's riskier for people interacting with cops than the cops themselves.