That's a big problem everywhere, people just can't trust strangers, prbly they had a negative experience or they are awaiting one :) I reckon in future you won't have to look out for each other, because streets will be covered with cameras, recording everything that's going on even in the darkest deadends! I visited Finland 18 years ago and found it quite safe and open for foreigners, wish to visit it again! Following you now, have a great day, mate!