All decent people feel sorrow and righteous fury about the latest slaughter of innocents, in California. Law enforcement and intelligence agencies are searching for motivations, including the vital question of how the murderers might have been connected to international terrorism. That is right and proper.

But motives do not matter to the dead in California, nor did they in Colorado, Oregon, South Carolina, Virginia, Connecticut and far too many other places. The attention and anger of Americans should also be directed at the elected leaders whose job is to keep us safe but who place a higher premium on the money and political power of an industry dedicated to profiting from the unfettered spread of ever more powerful firearms.

It is a moral outrage and a national disgrace that civilians can legally purchase weapons designed specifically to kill people with brutal speed and efficiency. These are weapons of war, barely modified and deliberately marketed as tools of macho vigilantism and even insurrection. America’s elected leaders offer prayers for gun victims and then, callously and without fear of consequence, reject the most basic restrictions on weapons of mass killing, as they did on Thursday. They distract us with arguments about the word terrorism. Let’s be clear: These spree killings are all, in their own ways, acts of terrorism.

Opponents of gun control are saying, as they do after every killing, that no law can unfailingly forestall a specific criminal. That is true. They are talking, many with sincerity, about the constitutional challenges to effective gun regulation. Those challenges exist. They point out that determined killers obtained weapons illegally in places like France, England and Norway that have strict gun laws. Yes, they did.