The Mumbai police are at their wits' end as the number of face blackening incidents keep multiplying in the city. There have been five cases of face blackening in the last four months itself, according to CNN-IBN: The latest incident took place on August 8, when the Shiv Sena's student wing attacked a teacher, for alleged indecency. A week before that, a lecturer from the prestigious JJ School of Arts was attacked by the Bharatiya Vidyarthi Sena, for allegedly molesting a student. In July, a...