President Trump’s arena tour is the “Mission: Impossible” of American politics — how is he ever going to overcome all his many enemies and prevail?

But unlike Tom Cruise’s character, he doesn’t have to deliver any results at the end of the show.

There are other showbiz analogies to be drawn from Trump’s appearances in places such as Tampa, Fla., Kansas City, Mo., and Wilkes-Barre, Pa. — a blend of rants, raves and jokes that poke fun at everyone but himself.

He is the Beyoncé of politics, the Sinatra of the sound bite, with a bit of Don Rickles thrown in. Thousands of people pack the place to stomp, laugh and cheer him on.

They know it’s all an act, but it’s an entertaining distraction from their day-to-day lives, which for the most part have not gotten any better since his election.

Yes, the economy is doing great, but mostly for coastal types who weren’t laid off from steel plants way back when and who have their health care taken care of by their employers.

Heartland voters? Not so much.

But all those problems get parked at the door at a Trump rally. His supporters couldn’t care less about Russian interference in the 2016 elections. They couldn’t care less about what Trump said to Vladimir Putin in Helsinki.

All he has to do is lay out a great dream.

“Mission: Impossible” movies are filled with breathtaking high dives and other stunts. None of them could possibly happen in real life, but it makes for a good time while you’re in the theater.

Walking the walk: Our new mayor is off and walking. She is walking through the Tenderloin. She is walking through North Beach and Chinatown.

Like the mayors of old who took the bus to work to make a point, London Breed is high-heeling it through some of the toughest neighborhoods of the city. And when she spots litter on the streets or doesn’t see cops on patrol, she lets department bosses know it.

It’s a good first impression for voters, who have to pick their way around one mess or another every time they step outside.

I probably walked more than any modern mayor, but I could never convince voters of that fact. Neither could Gavin Newsom or Ed Lee, who actually went out after hours and cleaned the streets with Public Works head Mohammed Nuru.

At least Breed is getting credit for making the effort. I wouldn’t be surprised if she starts carrying a broom.

Democrats’ dream: President Trump’s threat to shut down the federal government if Congress doesn’t give him $25 billion for his wall on the Mexican border is sending chills through every Republican on the November ballot.

Remember the 2016 campaign, when Trump ludicrously said Mexico would pay for the wall? Now he’s so desperate to carry out his big promise that he’s willing to stick U.S. taxpayers with the bill and put the government on the shelf if he doesn’t get his way.

Maybe he should ask the Democrats how that plan went when they briefly forced a government shutdown over DACA in January. Or the Republicans when they did it in 2013. It just doesn’t work — one image of closed gates at a national park is all it takes to turn the side that forces the shutdown into the loser.

If Trump pulls a shutdown in the fall, it will be the Democrats’ biggest election gift since Herbert Hoover.

Home run: At 80 years of age, Giants great Willie McCovey got married to his longtime girlfriend, Estela Bejar.

And he did it at the best of places, AT&T Park, at high noon on Wednesday.

Those present to witness the momentous occasion included Barry Bonds, Willie Mays and Orlando Cepeda. Among them, those three and McCovey hit more than 2,300 home runs, and their lifetime batting averages beat just about anyone on the Giants’ current payroll.

The marriage was presided over by team CEO Larry Baer, with the voice of the Giants, Renel Brooks-Moon, acting as the informal emcee.

Movie time: “Mission: Impossible — Fallout.” Tom Cruise and his team have outdone themselves, if that’s possible. Never a phony moment. It’s been a long time since a summer movie has been this much fun.

“Dark Money.” A primer for how big money can be used to manipulate voters. This documentary should be required viewing for prospective candidates, so they’ll know going into the game about the tricks used by people who already have a lot of money and now want power.

Goodbye to a great: The memorial service for Dwight Clark at Grace Cathedral was a celebration of a life well spent and devoted to bringing joy to everybody. All the 49ers greats from the 1980s were there, and letters were read from fans young and old.

Clark was so much more than “The Catch,” the play he’ll always be remembered for. Still, that one moment erased years of frustration for countless thousands of the team’s fans. That’s a pretty good legacy.

Judicial notice: I was walking by the Ferry Building on Friday when a guy stopped me and said, “I hear that Trump is about to agree to sit down and answer questions from Robert Mueller.”

“Really?”

“On one condition. Trump wants the answers to be multiple choice.”

Want to sound off? Email: wbrown@sfchronicle.com