In theory, part of being an adult is being able to take care of yourself. This includes being aware of your personal safety, leaving when a situation becomes dangerous and calling for help in the case of an emergency.<p>Sometimes police have to be involved, but in the vast majority of situations people can handle issues as they arise when they are at a supermarket, a public park, a bus stop, a bar or even a tech conference.<p>Involvement of authority figures and police monitoring at every single public gathering might slightly reduce certain problems, but the price is too high.