ELI5: Explain Like I'm 5

Cathar yellow cross

Okay, so you know how sometimes people have different ideas about what's right and wrong, and they might believe different things? Well, a long time ago in a place called southern France, there were some people called the Cathars who believed different things about religion than others in the area.

Now, the Cathars had a symbol that was very important to them, called the yellow cross. This was a special kind of cross that was yellow, which was not the same as the regular crosses that most people were used to. The Cathars believed that the yellow cross was a very meaningful symbol for their religion, and it showed that they were part of the Cathar community.

However, not everyone liked the Cathars and what they believed in, so some people didn't like the yellow cross either. They thought it was a symbol of something bad, and they didn't want anything to do with it. This caused some problems, because the people who didn't like the yellow cross wanted to get rid of the Cathars altogether.

So in the end, the yellow cross became a symbol of something that caused a lot of conflict and disagreement between people who believed different things. But for the Cathars, it was a very important symbol that showed their connection to each other and their beliefs.
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