Hey! I don’t have schizophrenia or schizoaffective, but i have a question.

My sibling has schizophrenia and my mother has schizoaffective, They’re in full remission for many years now.

I have a question to you folks out there, Why do delusions majorly manifest in something like the government/CIA/Politics.

I heard of different delusions, But for the most part delusions have to do with people “who are in charge”. Why is that?