The document discusses how hate groups form and spread hateful ideologies in prison systems. It outlines that prisons are no longer isolated from communities, as 95% of prisoners will return to society. Within prisons, gangs originally formed around identities like race and nationality have transformed into hate groups that seek to intimidate and attack others. These groups spread hateful beliefs as an "infectious disease" among inmates. The growth of hate groups in prisons threatens both the prison system and communities, as these groups develop criminal networks and political influence upon returning to society.