Slogans can kill. They often do. A simple slogan like Ek dhaka aur do, Jama Masjid tod do killed a few thousand people in addition to demolishing a five-century-old architectural heritage in the year 1992 under the pontificate of luminaries like L K Advani and Murli Manohar Joshi. No less than 150,000 people who called themselves kar sevaks metamorphosed into a cloud of frenzied hornets, mesmerised by a slogan. A mob has no brain. A mob only has a libido. A mob is an emotional surge, a mons...