A perceived threat or a fear of attack (physical, mental, or emotional), manipulation, or being taken advantage of
A person in your life who you feel manipulated by, threatened by, or afraid of
A general threat, such as violent crime or terrorism (for instance, dreaming that a killer breaks into your house, which represents your life, could mean you're afraid of harm or ill will coming into your life)
Possible dream symbol meanings in the dream dictionary are suggested. No "standard meanings" exist because dream meaning is subjective and specific to the dreamer.