Evilthing, IIRC, I think I saw you once or twice mentioning that you are from Chile (correct me if I mistook you for someone else). As such, this coming from you seems very odd to me, being from Latin America as well. Both you and I know for a fact that this is a first world approach to a third world problem. We have lived and been raised on an ideology where common sense is the only thing keeping our necks figuratively attached to our heads on an environment where assuming the worst out of ANY stranger on a situation where the vulnerable one is us, such as your example of going out at night alone, is the safest accepted way to live, thus considered the "common sense" option, and things such as race or gender do not even cross our minds for these things.
So, to answer your question in this context: bigotry stops when the problem was formulated, because the factors correlated to bigotry never came to play. Not a single time in conversations with friends, family or relatives have people from our side of the world said "hm, maybe we shouldn't go out at night with all these 15 to 40 year old males roaming around", and you never see it on news or online articles either. This is, as I said earlier, the Westerner's way of problem thinking, one that I find goes perfectly opposed to problem solving. If you are indeed from Chile, then all I can say is that you have been browsing too many English news websites lately and that is altering your perception of reality. Negatively. I would be worried in your place.