I intended to post this one a few months ago when the event happened but the post got pushed back in the drafts bucket until now.
The video below was yanked off YouTube shortly after it appeared in February, but the original uploader challenged the removal and the video was eventually restored for public viewing.
These are not joyous children reeling around an open field of flowers overflowing with the love of God.
Mass hysteria consists of a large number of people being influenced by a feeling of panic to the point that they begin to experience physical symptoms. These symptoms often mimic the well-documented state of hysteria, but are characterized by their rapid remission and frequent dependence on immersion in the atmosphere of panic. [RationalWiki]
This is real world human psychology and not the result of some invisible supernatural influence.
Notice the disgusting smiling parents that allow this to happen to their children casually standing around taking pictures.
This is another disturbing example of the abusive nature of childhood indoctrination.