How many wake-up calls does a society need before it takes notice?

On New Year’s Day, a terrorist rammed a truck bearing an Islamic State flag into revelers on a New Orleans street and then started shooting, leaving at least 15 dead and others injured. Pipe bombs wired for remote detonation were found inside the truck, and two other bombs were found in the area.

Hours later, a Tesla Cybertruck exploded outside the Trump Hotel in Las Vegas, killing one person and injuring others. At the time of writing, it was unknown if the two attacks were connected.

The New Orleans terrorist, Shamshud-din Jabbar, was a U.S. Army veteran from Houston, Texas. He worked in IT at Deloitte. Having initially suspected he had accomplices, the police later said they believed he had acted alone.

On Truth Social, U.S. President-elect Donald Trump repeated his previous claim that “the criminals coming in are far worse than the criminals we...