You're right, all editors need to follow these strict rules when dealing with ethnicity. I think this is a satisfying RS for Shahrukh Khan's image to be kept in this article, which states: "While we all know Shah Rukh is a Pathan, went to school in Delhi, has a cricket team in Kolkata and lives in Mumbai, we discovered his strong South connection over a conversation. We bring you an excerpt from the same, where Shah Rukh talks about how his Pathan father fell in love with his South Indian mother."  How SRK’s Pathan father fell in love with his South Indian mother, by Priya Gupta, The Times of India (August 4, 2013). I could bring more RSs if this isn't enough.