I Had A Dream

I believe your dream might be symbolizing the mental institution as you needing to step back from life or current situations. Alternatively, it may mean you are currently working on some aspect of yourself and (by running into your old classmates) are embarrassed how friends/family or strangers may react. Or it may just be a reflection of the past or a time you were hospitalized. (Hope I was close xD)

maybe the people are just cardboards. the only way move if the wind farted.