"the fbi uses undercover informants to radicalize teenagers on the internet into doing mass shootings that they then stop (sometimes) in order to launder their horrible reputation of ineficacy" is one of those things that sounds like a conspiracy but is just True unfortunately
FBI agents have apprehended an 18 year old who had been speaking to an FBI informant for two years until the FBI provided him with a rifle and ammunition and arrested him for it, the FBI says.