Religion is a mental disorder. I'm seeing a dangerous pattern here. Many of these jihadis are converted to islam in prison. Criminals especially the violent, two bit type criminals, aren't the brightest and best to begin with. Often raised in a religious home, with liberal amounts of bible thumping, administered to their puny brain in their childhood. Then, as they sort of grow up, they embark on a life of crime and sin, but are still neurotic about those ignorant religious superstitions rattling around in their pea brains.
After being in and out of jail for years since their teens, they start to see that they'll never get a real good job and get out of their life of crime. They realize that they are, at best, destined to spend most of their life in jail, and sooner than later, they'll die and end up in hell, being imprisoned there for eternity, to suffer torture for ever. That's how these numbskulls "think."
Then, they run into some jailhouse imam, who tells them that there is no way out for them, but if they convert to islam, and go out and kill for allah, then they'll go straight to heaven when they die fighting for islam. Most of them are even stupid enough to believe that there are 72 virgins waiting for them, for their enjoyment of heaven. It's the loop hole they were looking for! They had nothing to live for anyway, and nothing to look forward to in the non-existent "next life." Now they get an option, die in a blaze of glory for islam, killing as many infidels as you can, and your crimes and sins are forgiven by allah and off you go up the yellow brick road to heaven.
We really need to get religions banned from prisons. There is supposed to be separation of church and state. Prisoners have the right to believe in any horse shit belief, but the government should not be catering to, accommodating, and enabling religious beliefs. Some "good intentioned" people falsely believe that religion is a cure for criminal behavior, however history proves otherwise.
Islamic criminal converts are a clear and present threat to the USA. When they get released from prison, they should be tracked closely, and fatal accidents arranged for each of them.