It's called "availability bias." basically, when we are repeatedly exposed to information or recent examples of a thing, our brain over-estimates the things frequency. It's so easy to think of, there MUST be a lot of it!

This ignores the conundrum that we're stupid meat with electricity running through it, not perfectly rational computers, so just because some thing XYZ is easy to recall absolutely does not mean XYZ is common. It could be that we just had a weird string of encounters that are otherwise largely random, it could be a media empire calling attention to XYZ (completely self aware of availability bias btw), it could be that XYZ that are 'outside the ordinary' by nature just stick out in our minds. No matter the cause for our easy recall, it does nothing to affect the actual numbers of XYZ in the world. It requires conscious awareness and correction of this bias to compensate for it, but it and many others just seem like built in patterns of reasoning or heuristics our brain can't help itself but make.

Teaching critical thinking and encouraging others to confront and compensate for biases/heuristics/just sloppy thinking is very important in literally every regard, but especially politically. Finding a way to introduce these lessons is something you should definitely do!