There is a little problem with this theory : the second group of children has nothing to do with the first one. Try to find a single match between them and you won’t find any. So where is the conspiracy now ? Because there is absolutely no evidence at all that these children are from the same school, not even they are related in any way. The second group could well have been “managed” by the teacher, explaining this obedience, but the first one could well be another group with no management from parents or teachers, and could thus show what happen when you let children in a museum nowadays.