Actually, just about every police department uses very "hot", expanding ammo. The only alternative is FMJ, which has too much penetration, and increased danger of ricochet.
Of course, this did not prevent the Honorable, and Ignorant, Coleman A. Young, mayor of Detroit, from trying to ban "ammunition that you can't use in the damn Geneva Convention" from his police department. (His praetorian guard carried Uzis at a time when the rest of the police department could only carry revolvers.)
While in his view the police department should not use weapons or ammunition denied the US military, he forgot that the Army also has artillery, tanks, and helicopter gunships, all legal under the Geneva Convention (actually the Hague Convention). I don't think he was planning on equipping each cop car with a mortar and baseplate in the trunk.
"While in his view the police department should not use weapons or ammunition denied the US military, he forgot that the Army also has artillery, tanks, and helicopter gunships, all legal under the Geneva Convention (actually the Hague Convention). I don't think he was planning on equipping each cop car with a mortar and baseplate in the trunk."
LOL! Hey, if he was mayor during Prohibition he could've probably stopped crime by banning Al Capone from using tommyguns, too :)