Editors at National Review Online take aim at an odious ideology.

In America, as abroad, we see our fair share of inexplicable violence. But the patterns on display over the last few years have revealed that we are contending here not with another “lone wolf,” but with the fruit of a murderous and resurgent ideology — white supremacy — that deserves to be treated by the authorities in the same manner as has been the threat posed by militant Islam.

We will see a myopic focus on guns in the coming days, tied to a broader discussion of America’s “mass shooting problem.” This will be a mistake — not because America does not have such a problem, but because to focus on limiting a certain tool in a country with half a billion of those tools in circulation and a constitutional provision protecting their ownership is to set oneself up for guaranteed failure. In the last decade, we have watched in horror as devastating attacks have been carried out with the help of trucks, cars, bombs, grenades, incendiary devices, matches, and more. The task before us, to nip this grotesque insurgency in the bud, should transcend our debates over means.

Addressing the problem will require a number of different approaches, some broad, some narrow. President Trump, a man who is comfortable using his bully pulpit for the most frivolous of reasons, should take the time to condemn these actions repeatedly and unambiguously, in both general and specific terms. Simultaneously, the president should work with Congress to devote more resources to infiltrating, tracking, and foiling nascent plots (during the 1940s, the KKK was partly destroyed by a radio show that weaponized insider information against it), and he should instruct the federal government to initiate an information campaign against white-supremacist violence.