When I was in uni I was travelling to Kerala from Delhi by train. In the entire AC coach I was the only passenger. After the train left New Delhi station, a man in his 20s, came and sat in front of me. In an empty coach, why sit near the only other person? That got my antenna up. Plus, he didn't look like he could afford AC. After the train passed Mathura, this guy opened his briefcase and took out a paper pouch in which there was an off white powdery substance. I was quite alert now and looking intently at what he was going to do next. He held the pouch open with both hands which was quite weird because if he wanted to pour the powder into his mouth he should have held it using just the one hand. I was getting freaked out but I didn't let it show. I casually got up and stretched my arms and walked towards the exit. When I looked back I saw that he had started folding the pouch, and kept it back in his briefcase. A few minutes later the man walked away.
Never be trustful of co-passengers. Never accept prasad ever - not just in trains. Some weirdos give prasad to transfer their bad karma onto you. I'm not sure that works but why give them the satisfaction of taking their ill intentioned offerings.
At a media office in Delhi, there was this fat guy who gave boondi to everyone in the office every Tuesday after visiting the Hanuman mandir on Khadag Singh Marg. Everyone was too polite to say no; I would take it, and once he was gone, I'd wrap it in paper and throw it into the paper bin.
Don't be afraid of offending people.
In this clip, a gang of two women and a man work as a team to drug a woman waiting at a bus stop and decamp with her jewellery, mobile phone and purse. She was lucky they didn't carry her away too for organ harvesting, human trafficking, ransoming, prostitution or serial killing.