Gun laws have always been most strict in cities with large numbers of black people. Detroit is no different in that regard. In 1925, Dr. Ossian Sweet was acquitted of defending his home from a mob of people who were upset with the gall of a black man who dared to integrate a white neighborhood.
Ector, was referring to the Michigan court case which many have credited as being the genesis of the 1927 Michigan Firearms Act. This law created County Gun Boards, required the licensing of handguns, and made acquiring Concealed Pistol Licenses (CPLs) and handguns difficult for most black people.