Spiritual Meaning:
A crowd suggests a group with a popular belief, or common religious feelings. More negatively a mob has a common belief, but of a more fanatical nature.

Psychological / Emotional Perspective:
Dreaming of being in a crowd could be indicative of the fact that we do not wish to stand out, or that we do not have a personal sense of direction at present. The type of people in the crowd may also be relevant.

Everyday Material Aspects:
We may wish to camouflage our feelings from others, to get lost or even to hide our opinions. In everyday life we need to retain our anonymity, to create a facade for ourselves. Conversely, there may be safety in numbers if we join a group of like-minded people.

You might also like to consult the entry for Group.