Even the originalists on the Supreme Court agreed that domestic abusers should be barred from owning guns under the Second Amendment in that recent case. (Of course the Second Amendment was only meant for a "well-organized state militia". But some say it could apply to an "unorganized" militia of armed citizenry, to help defend against foreign invaders or domestic threats. That still has nothing to do with private gun ownership. But whatever.) But Chief Justice Roberts was right. The Second Amendment still allows some restrictions on people who "present a credible threat to the physical safety of others". Because the English Bill of Rights of 1689 (which the US Bill of Rights is based on) said that only Protestants could own arms for defense. Never Catholics. Because they might rebel against the English majority. In England the the US at the time of the Bill of Rights. Although in 1695 the English Parliament passed a law that allowed Irish Catholics to possess or carry arms, but only under government license. But this was only because the parliament allowed it. Under the original meaning of the Bill of Rights, Catholics can never own guns. Probably not mentally ill people either. Domestic abusers? People in George Washington's time would probably say "what's the big deal?" They should be allowed to own them. And Roberts should know. He is one. (A Catholic that is. Not a domestic abuser.)
The Second Amendment is a pernicious artifact from a time when we were a confederation of states, had no standing army, and the standard infantry weapon had a firing rate of four times a minute and a range of a hundred yards. Now we garrison a global empire, and the Second Amendment's sole raison d'etre; to maintain "a well regulated militia", has been a moot point for over 100 years. More Americans have been shot to death in the last 50 years than in all of the wars in American history; more than 1.5 million human beings. To attempt to justify such carnage based upon reverence for a legislative fossil that should have been repealed when high-button shoes and buggy whips went out of fashion is as idiotic as it is obscene. The U.S. Constitution has been amended 27 times. It's well past time we amended it again and repealed the Second Amendment.