If this photo is accurate, their appearance and body language reads as the Guy Richie stereotype European young thugs. It’s the track suits, shaved heads, and gold jewelry. Meeting them in person and reading body language and mannerisms would be a better tell.

Whether or not they are thugs, the fact that they are influenced by or idolize the concept can be signals to put their guard up. Theirs and by association your appearance sends signals on how you wish to be perceived and sometimes that’s enough to set off instinctual warnings. The next step is to convince your parents through actions and patterns.