The children were small and unable to see the potential danger in colliding with pedestrians, so their parents should have taken on that responsibilty for them. It's a problem of course when they are further ahead and rather excited. I get annoyed on the occasions I have met them in supermarkets where they are a menace, the parents that allow it in such a place are not respecting other shoppers. I was very glad in one instance, a manager, did the right thing and told the mother that her child must get off the scooter immediately. On another occasion, I witnessed a very young child, probably under 3, scooting through our local department store to the exit, automatic doors, main road outside, she had to be grabbed by staff, no mother in sight, she turned up a good few minutes later. These micro scooters are great, my grandchildren have them, I'm not sure I'd want to take them out anywhere too busy with them. It can be problematic with children whizzing along at great speed, unaware of potential dangers.