Make it illegal to take pictures of children and/or faces in public places

Background

To make illegal to take photos of children in public places that should be illegal, as of right now it is legal to take photos of children is completely legal

Additional details

Me and my family went out Apex Park in Highbridge Somerset, I strange person took photos of my sister and other children with a camera and taking photos of children playing right up in there face, the police now have said that this is completely legal, How can a stranger taking photos of your child and/or children be legal? The law needs to change to take photos of children in public places, especially with children being bullied and harassed , let’s get this law changed to make this illegal!