You only fight to defend yourself or those in your care, using only as much force as necessary (no pre-emptive strikes allowed!). You must do your best to discourage others from starting fights.
You are upset by any sort of strange circumstances, and in particular by strange people. Make a self-control roll when surrounded by people of another race or nationality; roll at -3 if the people are not human. If you lose control, you might well attack strangers out of fear.