This must be said: The most memorable line from Donald John Trump’s inaugural address didn’t appeal to our highest ideals, but instead it spoke to one of the scourges that plagues our society.

The president said on Jan. 20, 2017: “This American carnage stops right here and stops right now.”

Now, to be fair, he was referring to the scourge of drugs and gang violence. The law-and-order candidate who became president vowed to end the violence associated with that activity.

However, the “American carnage” that continues to plague us has spilled more blood, caused more heartache, shed more tears, delivered more grief to the nation.

Eleven worshipers at a Pittsburgh, Pa., synagogue were gunned down early Saturday. Four police officers were injured. The cops arrested a man in connection with the slaughter at the Tree of Life temple.

He reportedly is a virulent anti-Semite. He has committed the worst attack on the Jewish American community in U.S. history. The suspect faces charges associated with hate crimes.

The American carnage is continuing. There appears to be no sign of an end to it. The president is demonstrating — to the absolute non-surprise to millions of Americans — a jaw-dropping inability to comfort a nation in mourning.

Admittedly, this latest spasm of bloodletting isn’t “this American carnage” to which the new president referred in his inaugural speech. Nevertheless, it is an American carnage that needs the nation’s undivided attention.

Pittsburgh now joins the roster of communities stricken by mass murder: Littleton, Aurora, Orlando, Springfield, Charleston, Parkland, Orlando, Newtown, Blacksburg, Killeen, Santa Fe, Sutherland Springs … my goodness, I simply cannot remember all of them.

They all have been victimized by the “American carnage.”

Mr. President, you have work to do. Get busy.