Viewpoint: Why Sikhs are the do-gooders of the world Published image copyrightGetty Images image captionBaljinder Singh, 60, cleans shoes of devotees visiting a mosque in Punjab as a voluntary service Founded some 500 years ago in what is now India's Punjab region, Sikhism is the world's fifth-largest religion. But what makes its members habitual do-gooders? Author Jasreen Mayal Khanna writes on the tradition of selfless service ingrained in the community. Think of any scene of disaster and you'll find Sikh volunteers rallying to the site, feeding migrants, helping riot victims, and rebuildin...