Who are they and why should they be locked up?
Cassandra lists three things :
1. Safe: however extreme both parties have to play safe so as to avoid any accidents and situations where the Domme is left with a lifeless corpse.
2. Sane: that is relative to the sub and Domme who are playing, what is sane to me maybe insane to you, it goes back to point number 1, it has to be safe.
3. Consensual: this goes without saying otherwise it is just abuse. The reason you go to a professional Dominatrix is because it something you want and you know it will be delivered safely and correctly. That why there is a safe
As possibly a "purist" I do like my Mistress to push me and push me hard she does. We have a safe word but I choose not to use it, I leave it to my Mistress to decide when I have had enough but if I was weak then I have the option to use the safe word. I have asked my Mistress to push me to certain extremes and my Mistress as a professional takes my ideas and tailors them to suit my needs while as bad as it may look and feel at the time it is all done by a professional who constanly assess my condition.
No-one really wants to die or to be abused, we only want to be pushed.
Can I ask? Are you a thug or a man who likes to lick boots, I am only asking as your username could mean either. If its the latter then I thought you may have got the BDSM bit.