This might be the least surprising development imaginable in the festering controversy over athletes refusing to stand when they hear “The Star Spangled Banner.”

Some key NASCAR heavyweight owners have issued fair warning to their crew members — including drivers — who don’t stand when they play the National Anthem at the start of each automobile race.

You stand or you will get fired! Got it? Good!

This issue has become a serious talking point ever since former NFL quarterback Colin Kaepernick started a protest this past season by kneeling during the playing of the National Anthem. Kaepernick said he was protesting treatment of African-Americans.

It’s gotten a lot bigger this season. The president of the United States has weighed in, suggesting NFL owners should fire the “sons of b******” who refuse to stand during the Anthem. The NBA champion Golden State Warriors were disinvited to the White House because some of their star players have expressed support for the sideline demonstrations.

The protests are being led by mostly African-American athletes. NASCAR, of course, comes from a different environment altogether. It’s rooted in the Southern culture. Its fan base is overwhelmingly white. As are its drivers, owners and associated crew members.

The different approach to this National Anthem protest business is on stark display. As The Sporting News reported: Hall of Fame driver Richard Petty and current team owner of the No. 43 Cup Series team of Aric Almirola agrees with Trump.

“Anybody that don’t stand up for the anthem oughta be out of the country. Period. What got ’em where they’re at? The United States,” Petty said, adding that any protester within his organization would be fired. 

We live in a tremendously diverse country. Its diversity is being played out right before our eyes as we prepare to watch sporting events — and see how athletes of all stripes react to the sound of “The Star Spangled Banner.”