Brief of Amicus Curiae submitted by Congress of Racial Equality in Support of Respondent, in the case of D.C. v Heller 2008. Lays out the history of gun control used as control of Black Americans.
Just one of many items cited: Watson v. Stone, 148 Fla. 516, 524, 4 So.2d 700, 703 (1941)
Justice Buford of the Florida Supreme Court noted in his concurring opinion narrowly construing a Florida gun control statute:
I know something of the history of this legislation. The original Act of 1893 was passed when there was a great influx of negro laborers in the State drawn here for the purpose of working in turpentine and lumber camps. The same condition existed when the Act was amended in 1901 and the Act was passed for the purpose of disarming the negro laborers .... The statute was never intended to be applied to the white population and in practice has never been so applied .... there has never been, within my knowledge, any effort to enforce the provisions of this statute as to white people because it has generally conceded to be in contravention of the Constitution and nonenforceable if contested.
So in 1941 there was an easing of an acknowledged racist gun law in Florida.
ADDED: how late? Awfully late.
Don B. Kates taught in Missouri in the 1970s. "As one of my students recently learned, a personal 'interview' is now required for every St. Louis application. After many delays, he finally got to see the sheriff who looked at him only long enough to see that he wasn't black, yelled 'he's alright' to the permit secretary, and left." Kates, 1976.
A coworker of mine got a Virginia concealed carry license back in the day when it was at discretion of county judge. (I had mentioned I had recently got my Tennessee handgun carry permit.) He told me that when he showed up in court, the judge simply looked at him once, asked no questions, and approved his license. He felt he was approved because he clearly looked white, and expressed contempt for the process. (Currently TN and VA have handgun license/permit administered like drivers license by the state.)