Briefly quoting the Fox News report linked above:
“The good-reason law is necessarily a total ban on most D.C. residents’ right to carry a gun in the face of ordinary self-defense needs,” Judge Thomas B. Griffith wrote, according to the paper.
“Bans on the ability of most citizens to exercise an enumerated right would have to flunk any judicial test.”
Given her widely noted dislike of guns and gun owners, Washington Mayor Madam Muriel Bowser is likely to appeal the rulig to the Supreme Court of the United States. However, the decision has precedent and law so an appeal is likely to do nothing more than measures that would cut the Districts sky high violent crime rates.