The problem is that too many people don't know what 'normal' is and nobody can pay attention to everything all of the time. When attention is drawn to something, and without the ability to judge if something is unusual, the inclination is to believe that noticing for the first time is the same as occurring for the first time.
There is a BBC Radio program called More or Less, which covers analysis of statistics in the media. They have a motto "Is that a big number?" which is a great starting point for any investigation, essentially asking if the observation is what you would expect if nothing newsworthy were occurring. It's worth keeping that idea floating in your head.
The additives added to tap water to make them generate rainbows is a good example https://www.youtube.com/watch?v=aIYZvr3ueGw
There is a BBC Radio program called More or Less, which covers analysis of statistics in the media. They have a motto "Is that a big number?" which is a great starting point for any investigation, essentially asking if the observation is what you would expect if nothing newsworthy were occurring. It's worth keeping that idea floating in your head.