Before the digital era, to fully develop a photo took 2 stages. The first was to make a negative, which shows subjects as darkest and the darkest area as lightest. This is useless until exposed to the light to make a positive, that shows true.
So when a negative person is doing their level best to rain on your parade, you can be sure they are only half developed. Dark ignorant people do walk among us and don’t care diddly-squat, about making our life miserable.
Here is a such a story, a mini drama where a good image finally triumphed once the negative was fully exposed.