A reader recently called to complain about a syndicated column in The Daily News.

He ended by threatening to cancel his subscription. Later that day, he did.

In today’s politically polarized times, that type of reaction is not uncommon. But it’s disappointing that differing views don’t just generate disagreement but calls it shouldn’t have been printed.

First, the Opinion page is supposed to be a forum in the newspaper for taking a stance on issues, in a letter to the editor, a column, an editorial. It’s labeled Opinion for that reason.

Second, The Daily News runs six columnists a week. Two could be considered left-leaning or liberal — Mona Charen on Tuesdays and Froma Harrop on Saturdays.

The other four are right- or conservative-leaning — Judge Andrew Napolitano on Mondays, Cal Thomas on Wednesdays, Rich Lowry on Thursdays and libertarian John Stossel on Fridays.

That’s four right-leaning to two left-leaning, for those keeping score on the “slant.” In addition, when Charen is not available, Michael Barone gets substituted — also conservative.

Yet the two left-leaning columnists generate the bulk of the complaints — almost always coupled with insisting they be dropped from appearing in the paper.

Disagreeing with a differing view is understandable. These columnists didn’t become syndicated by being neutral — what they write is supposed to trigger a reaction.

But the Opinion page should be a place to voice — and tolerate — all views, not just the ones we agree with. Readers are always welcome to submit a letter to the editor stating why they had a problem with a column, editorial or letter.

One final note: The reader who called about the column was angry. Very angry. Anger often seems to be the go-to emotion when it comes to politics these days, but it’s difficult to see how maintaining this level of outrage is healthy, either for the person or the political climate. That it could be triggered by a column is worrisome. Time to turn down the temperature.