Gifts From Strangers
A common scam all over the world especially in Europ and USA.
In this scam, a friendly will suddenly appear, start a conversation and then gift you a bracelet or anything they can put on you, once you have it they will demand money. when you refuse, they will aggressively take your money.
How to Avoid/deal with it :
Don’t let anyone put anything on your body and don’t take anything for free unless there is a good reason for it.