In the bible, there was a man who could no longer be bound, not even with chains, and the demons in him said "we are legion, for we are many".
Always makes me think of the left with all their labels.
Anyway the disciples couldn't drive the demons out, Jesus said this kind takes prayer. He drove the demons out into a group of pigs and they ran off a cliff.
Only at the precipice, will some find the will to change.