Of course they are. Islam is a war plan... and criminals make good shock troops. That’s why it is such a dangerous prison religion. It promises the violent the opportunity to work out all of their demonic fantasies, as long as they do it on non-believers, and show a little self-discipline within the Ummah.
Make sure to stay an Islamic non-believer. The mark of the beast is far worse than whatever they do to your body. Worry only what they can do to your soul.