> The FBI is a political organization and chooses who they will persecute based on the political leanings of FBI leadership.

That's seems like quite a broad generalization.

Here are there press releases with regards to developments towards cases: https://www.fbi.gov/news/press-releases/press-releases

Crimes that involve politics will always have some individuals stating they did things for political reasons, but without examples or more context to what you are referring to, that statement seems particularly broad stating that FBI is a political organization.