I got this today and the warning appears genuine. Yesterday, a friend of mine was travelling on a Sheffield to Doncaster train. A man of Arabic appearance got off the train and my friend noticed that he had left his bag behind. She grabbed the bag and ran after him, caught up with him in the station and handed him back his bag. He was extremely grateful and reached into his bag which appeared to contain large bundles of money. He looked around to make sure nobody was looking and whispered "I can never repay your kindness, but I will try to...with a word of advice for you: Stay away from Doncaster" My friend was genuinely terrified. "Is there going to be an attack?" she asked him. "No" ... he whispered back "It's a sh1thole"