A common question that non-Scientologists ask and I am sure many ex-Scientologists ask themselves is: how could someone do such horrible things?
Scientology is built on a culture of fear. You spend your days in fear of being snitched on or caught doing something human. In the Sea Org this is especially true, because you are surrounded by other hardcore Scientologists. If you are caught saying or doing anything out of line you are immediately reported to the thought police.