To see people you know in your dream signifies qualities and feelings of them that you desire for yourself. If these people are from your past, then the dream refers to your shadow and other unacknowledged aspects of yourself. It may represent a waking situation that is bringing out similar feelings from your past relationships.
To see people you don’t know in your dream denotes hidden aspects of yourself that you need to confront or acknowledge.
To dream that people are standing or blocking your way refers to those around you who don’t want you to move ahead and succeed in life. You feel that someone in your social circle is working against you. Alternatively, the dream implies that you are being protected from some harm.
To see dangerous people in your dream suggests that you need to proceed with caution in some endeavor.