Luke again when he rapes the refugee while he's controlling her mind. Imagine the general powerless feeling a victim experiences during sexual assault, times a million, since the rapist is literally INSIDE YOUR MIND pawing over your thoughts, forcing his mind into you, and generally removing your free will
On that note, Mark's Modus Operandi is FULL of Nightmarerifficnessin that he creates mind controlled sleeper agents, who might at any moment switch over from being the helpful mechanic working with Caz, or a Whitechapel Market shopper, into a sociopath intent on killing everyone in sight.