Uma Mageswari was returning to her home on the Singapore subway.
The car was half empty, which Suraj, a pervert, took advantage of.
The man began to record her, dissimulating his facial expression, but one detail played him a trick.
In the glass behind him she saw the reflection of what he was doing with his cell phone.
Uma did the same and shortly after he posted this video on his Facebook.
In this way they managed to capture the man and in the meantime teach women that harassment is not something that must be endured.