JaneJacobs thinks that security on the street comes from many different types of people overlooking it at many different times of day.
Safety is a function of diversity and density.
Well, the counter to that would be something like Twitter where the more people there are it seems the more this spawns GreaterInternetFuckWads.
Except, perhaps Twitter isn't a "place". OTOH, maybe comment threads of particular users / celebrities are places? Could more activist / interventionist public figures speaking out against the trolls in their fanbase be a solution?