Indeed. Bursting into a house unannounced is much riskier for the cop than knocking and letting a person calmly answer the door.
"Indeed. Bursting into a house unannounced is much riskier for the cop than knocking and letting a person calmly answer the door."
Scalia wrote, though, that "the interests protected by the knock-and-announce requirement are quite different." He said the rule was intended to protect police whose unannounced entry might trigger a self-defense instinct by a homeowner, to give citizens the chance to comply with requests for police access and to give homeowners time to "collect" themselves before answering the door.