An idea based on one word.
There was just one memory, fear. Not like being scared of spiders or of embarrasing themselves but the kind of fear where they could not move, or think. The kind of fear where all they could remember was fear.
Lieing alone in the terrifying darkness this fear was understandable. They dared not breathe in case of being heard. Any noise could provoke anger, anger which they could not comprehend. It was not a rage which could be explained or rationalised. It once again was based on the memory of fear.