If I see someone video taping me or a child I would ask them not too, even though its their phone, they can do what they want without my permission, but its not right, there are just a lot of weirdos out there.
True you cannot stop them. I would either start videoing them as well or leave the area. I am more kind of asking along the lines of people who are trying to start something like the ones where they are videoing and THEY are trying to start a fight.
Like the woman who confronted another woman she didn't know because she accused her of being a bigot toward somebody else SHE didn't know. And starts jumping on her and videoing. You shove your phone in my face I will slap it out and across the ground. I can understand why people react violently the way they do at times. People are bullies (and the woman videoing was a bully) and push people too far.
There just seem to be more and more videos all over the internet basically trying to shame people. And if you are in a viral video you can bet unless you own your own business you will lose your job because then people start screaming boycott the business. I guess I just cannot grasp how evil people have become. It is like their sole purpose for every day is whose life can I ruin today?
But you are correct it is not right that people can video you or take your picture and there is nothing you can do about it. I do not care if I am in public. If it is ME you are taking pictures of I should have a right to say something about it.