I have dreams most nights of being threatened

[Instigator]

usually by groups of people who I've not seen for many years? They usually hang around outside and give threats to kill me...

what does this mean?

[whocares]

To dream that you threaten someone suggests that you need to assert and stand up for yourself in your waking life. Don't let anyone boss you around.

To dream that you are being threatened indicates that you have internalized some fear. You are feeling inadequate or oppressed.

http://www.dreammoods.com/dreamdictionary/t2.htm

[Nachismo]

Hey Instigator, did you have issues with these people in the past during waking life?