These are older articles, but I find the connection interesting. Two cult-like organizations (mind control) both are recruiting in prisons. All armies need a continual resupply of soldiers.

Perhaps targeting inmates is a way to recruit a labor pool that has already demonstrated a willingness to commit a crime.

The last one is for Keks, kinda. L. Ron Hubbard Mark 2 has an infinity tattoo on his forehead. He was first introduced to Scientology while in prison.

https://www.cbsnews.com/news/priscilla-chan-mark-zuckerberg-wife-wants-to-teach-inmates-how-to-code/

https://reason.com/blog/2019/01/16/how-scientology-recruits-inside-florida

https://www.vice.com/en_ca/article/3kgkwv/this-guy-claims-to-be-the-reincarnation-of-l-ron-hubbard

>>5583761

Another advantage to recruiting prisoners. Anger, looking for retribution, limited opportunities elsewhere makes these candidates loyal, motivated, and gives them a sense of purpose.

https://www.humanrightsfirst.org/blog/how-isis-recruits-egyptian-prisons

>>5583864

Prison time can be used for training (indoctrination) and radicalizing. Once the sentence is over the prisoner will belong to a new group (gang).

This article expresses concerns about Muslims being radicalized as a consequence of their incarceration and then becoming terrorists after release.

https://onlinelibrary.wiley.com/doi/pdf/10.1111/j.1745-9133.2009.00574.x