Assault :(

I was told, all the time, by different people in Brazil: Don`t show off, don`t wear expensive stuff like watches, don`t talk on celurar in crowded places. Be careful, always look around you. That`s what all Brazilians do.
So one day me, my friend and a our woman friend were driving in SP, about 5 minutes from main street Av. Paulista. We stopped under the bridge on a traffic light, before us there were about 3 rows of cars, to the left, to the right and behind there also were cars, so we could not move. to the left from road there was a fence, and a gym apparatus under the bridge, just behind the fence, and to the right, rows of houses, with no visible doors..So there i was, siting in front of driver, playing my celurar phone, it was 6PM in november its already dark, and the light from phone was very visible, next thing happens, my friend hits on my hands, my phone flies under the seat, im trying to get it back, and telling him like wtf are you doing, he said look, so i looked outside, and i saw 3 black guys walking towards our car, with guns, they were no more than 16-17 year old, so my friend beeped horn, tried to move his car a little, then those guys turned to car 2 meters away from ours, surrounded them took something from inside and then just walked away.. So that was unnecessary attention i was drawing, i won`t do it again...By the way if it happens to you, don't try to resist, give what they want..