In a video called, "brain washing in a godless big business cult", a woman tells of her experience in a Landmark Forum. You can hear the hurt, the distress, the fear in her voice. I felt distressed after watching it, but I knew it was heartfelt.
There is one point at 6 minutes in when she describes a particular episode in the weekend Forum. Participants are told to imagine their greatest fears and that those around them are also creating fear. The Forum leader shouts at them and harangues them until many break down and sob and shake. Many others have focussed on this particular point in the Forum as one of its most destructive moments. Here's her video: