Is a police officer required to announce his presence before entering a home?

MultiRegion, United States of America

The following excerpt is from Mendez v. Cnty. of L. A., 815 F.3d 1178 (9th Cir. 2016):

The Fourth Amendment knock-and-announce rule requires officers to announce their presence before they enter a home. Wilson v. Arkansas, 514 U.S. 927, 93134, 115 S.Ct. 1914, 131 L.Ed.2d 976 (1995). Police may be exempt from the requirement, however, when "circumstances

[815 F.3d 1192]

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