We all know the old saying.  You don't talk about religion and politics in polite company. Only, does that advice make sense in a society like ours, where we practice self-governance?

How can we govern ourselves if we can't talk to one another about politics? And, more pertinent to this episode of Plain Talk, how do we teach our kids how to participate in discourse over challenging issues like abortion or gun control if teachers are afraid to tackle politics in the classroom?

Lindsey Galvao is a long-time educator -- the social studies curriculum specialist at GBH and a multiplatform creator for public media, and curriculum writer for the Civics Collection on PBS LearningMedia.

Ben Klutsey is the executive director of the Mercatus Center at George Mason University whose work is featured in the documentary "Undivide US."

They recently co-authored an op-ed about politics in the classroom, and joined my cohost Chad Oban and I to talk about that very conundrum.

"We disagree and that's ok," Klutsey told us. The problem, he argues, is that so many people say "we disagree and you're a threat to my existence."

Both Klutsey and Galvao say that teachers need to be unafraid to host discussions about even fraught social and political questions, but that their focus should be on listening and encouraging students to understand one another.

But how do we deal with misinformation? Kids who might have gotten the idea that the Sandy Hook school shooting didn't really happen, as right-wing talk radio host Alex Jones has claimed, or that the world is flat?

Galvao said she would encourage teachers to ask those kids, "How do you know what you know?" They should be encouraged to explore the basis for their point of view.

"We have to think about abiding by certain core principles," Klutsey said, identifying them as respect, authenticity, and curiosity. Which is to say that we need to respect those who disagree with us, represent our own views authentically, and be curious about why others disagree with us.

Though, he acknowledged, that doesn't mean making room for false information. "Facts are facts," he said, "and you have to engage on facts as an educator."

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