I live near to Tesco Express. During the evening various youths came past my flat, some carrying Tescos bags, all excited. They didnt seem organised, they didnt seem particularly hostile, just over-excited young men who were having a bit of a "jolly". Very wrong but not indicative of a deeper malaise. On the other hand, I watched 3 young men, white, well prepared in balaclavas and scarves, carrying batons. For 20 minutes they hid behind a wall opposite, one talking on a phone the others keeping a watch out. That struck me as unsettling. They seemed prepared.