shaddow people

At the house i currently live in i have found i have a shadow creation homosapian like in appearance that just watches me through the doorway from the hallway at night when i go to bed, i believe their to be two that watch me though sometimes one comes into the room and stands in the corner until i notice it then it kind of just returns to the hallway.

I also see several of these when i go out into my carport at night i can see them from the end of the driveway/street/front yard however these ones outside seem to not be almost angry.

Should i be concerned about these at all? do they actually pose any kind of threat in anybody's experience?