Dangerous to be curtious in Sweden
Short summary: The man has just been to a night club at Möllevången in Malmö in november last year when he passed two people. When the man said ‘hello’ to them while passing the two men became aggressive. An argument arosed and the man got punched in the face. When he tried to run away they chased him and beat him unconcious.
While in the rest of the world it is curtious to great people, in Sweden it is taken as offensive behavior that requires a good beat down so that people learn their manners.