It happens in many places, it is very easy to trick people into helping sick children etc. It happened to me once in Berlin, I was ust nearby the Bundestag and a boy approach me, he looked around 16 years old, showing some papers, and wanting me to sign some document to express my support for hungry children in the world. I didn’t know it was a scam, I was thinking he was just collecting voices of support, yet right after I signed it, he insisted on donation. I refused several times, and he grabbed me in the breast… I pushed him, and then he left. It was disgusting.