Who will perform at Donald Trump's inaugural festivities? Despite the most divisive presidential election in memory, chances are there will be some genuine A-listers there. Garth Brooks made it clear last week that he would consider it a politics-free, patriotic honor to play such a gig if he was asked. (Brooks never endorsed a candidate.) Others are likely to follow his lead.

That's about the most positive development so far in terms of a cessation of hostilities between the incoming president and the entertainment industry. Other than that, shutting up about their political opinions — Mark Wahlberg's suggestion to fellow stars — may be the only way to get along these days.

That is, if anyone is interested in getting along. Industryites have been known to get along with just about anyone if it's in their own best interests.

For instance, somehow, Hollywood, collectively, has managed to put aside its political grievances against creative titan Clint Eastwood and acclaimed actor Jon Voight, whose careers continue to prosper despite years of Republican outspokenness.

Of course, it hasn't been easy to be Republican red in this bastion of Democrat blue. In the 2004 AMC documentary, "Rated 'R': Republicans in Hollywood," Patricia Heaton tells of having dinner and conversation with a few Hollywood friends when the subject of politics came up. When the "The Middle" and "Everybody Loves Raymond" star said she was voting for George W. Bush, the chatter turned to awkward silence.

"You'd think I'd crapped in the middle of the table," the Emmy-winning actress recalled.

Jesse Moss, the filmmaker behind "Rated R," had trouble getting stars to appear on camera. A disclaimer in his film stated that Mel Gibson, Chuck Norris, Dwayne "The Rock" Johnson, Bruce Willis and Heather Locklear — all known Republicans — refused to be interviewed.

After the 2012 election, which certainly left Hollywood a happier place than today, plenty of major names worked with fellow actors who might have been considered from the enemy camp, politically speaking. Obama supporter Sanaa Lathan and Romney man Kelsey Grammer acted brilliantly together in Starz' dark drama, "Boss." Taraji Henson, who also campaigned for Obama's re-election, worked on "Person of Interest" with religious conservative Jim Caviezel. And of course, President Obama's friend and former Harvard classmate, Hill Harper, was on the "CSI: NY" set all the time with "one of the finest actors I've ever met," Gary Sinise.

Sinise has been among the unofficial leaders of the industry's conservatives, though he often keeps his views off the record in deference to his vast, nonpartisan charity work.

The high bar for Hollywood types of different political stripes getting along had to have been set by the five-decade friendship between Golden Era movie stars Jimmy Stewart and Henry Fonda. Best pals and roommates in their early, struggling days, Stewart was a staunch Republican and Fonda a devout Democrat. The story goes that they got into a fistfight over politics once in the 1930s and decided never to have another heated political argument. They even did a send-up of their political differences in their "Cheyenne Social Club" Western.

There was, however, nothing funny about the monumental pressures that the Stewart and Fonda friendship withstood — first during the Hollywood blacklisting period, and later during the Vietnam War. Fonda's daughter, Jane, was the most controversial of anti-war activists. Stewart's son and his nephew were military men who were killed in Vietnam.

Stewart, a decorated WWII bomber pilot and brigadier general in the Air Force Reserve, made it clear that as far as he was concerned, his son "was called upon by his country...When he got on the field of battle, he conducted himself in a gallant manner, and to me that's not a tragedy." Fonda (who himself had been a decorated WWII Navy man), agreed with Jane about Vietnam, and once publicly admonished her critics to "shut up" because "she's perfect."

Fonda and Stewart did not discuss the war. As Jimmy explained in a TV interview, "I — we — just realized that if we started yelling at each other about this, the thing would go out the window, and both of us valued this friendship too much."

Food for thought inside and outside Tinseltown.