MISSION, Kan. (AP) — Teachers have found themselves on the front lines of the culture wars as the anniversary of the insurrection at the U.S. Capitol arrives.

With shouting crowds at school board meetings and political action committees investing millions in races to elect conservative candidates, talking to students about what happened is increasingly fraught.

Now, they're being left to decide how — or whether — to teach their students about the events that sit at the heart of the country's division.

And the lessons sometimes vary based on whether they are in a red state or a blue state.

LOOK: Food history from the year you were born

From product innovations to major recalls, Stacker researched what happened in food history every year since 1921, according to news and government sources.

LOOK: The top holiday toys from the year you were born

With the holiday spirit in the air, it’s the perfect time to dive into the history of iconic holiday gifts. Using national toy archives and data curated by The Strong from 1920 to today, Stacker searched for products that caught hold of the public zeitgeist through novelty, innovation, kitsch, quirk, or simply great timing, and then rocketed to success.

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LOOK: Things from the year you were born that don't exist anymore

The iconic (and at times silly) toys, technologies, and electronics have been usurped since their grand entrance, either by advances in technology or breakthroughs in common sense. See how many things on this list trigger childhood memories—and which ones were here and gone so fast you missed them entirely.

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