I am about to embark on a futile and pointless mission, which is to try to talk some sense into the president of the United States of America.

Donald John Trump Sr. is planning a “campaign-style” rally in Phoenix, Ariz., next week. The city’s mayor has implored the president to forgo the visit.

The “why?” is simple. National tensions have hit a fever pitch. We’re still reeling over the Charlottesville riot and the death of young Heather Heyer and two Virginia state troopers. Klansmen, neo-Nazis and white supremacists gathered to launch a protest; counter protesters met them. They clashed and all hell broke loose.

The president then proceeded to absolutely demolish his moral authority on damn near anything by declaring that “both sides” were at fault and in the process virtually equated the racist, bigoted hate mongers with those who opposed them.

So now Trump wants to stage another rally out west? He wants to tell his adoring — but shrinking — cadre of supporters about all the good things that have occurred since he became president?

Memo to POTUS: There stands a very real chance, sir, that your rally is going to provoke more violence. It might go badly for everyone concerned.

Then there’s this: We’re hearing talk about the president possibly pardoning former Maricopa County Sheriff Joe Arpaio, who has been convicted of violating the civil rights of illegal immigrants he had arrested. “Sheriff Joe” has become a darling of the anti-immigration movement, given his tough talk and actions.

I merely would implore the president to resist the temptation to pour even more fuel onto that already-burning blaze.

OK. I’ve stated my piece. I know it won’t matter one damn bit to the president or to his supporters who read this blog. However, I feel better having gotten it out there.

Now, let’s hope for the best — which would be for the president to skip this rally. Hey, maybe Ivanka can talk some sense into Dad’s thick, orange skull.