10 Strange Examples of Mass Hysteria

Incidents where people all began to act mysteriously and demonstrate symptoms that seemingly made no sense, like nuns that bark or children that can’t stop laughing. As quickly as they come, they often fade away and few people are any worse for it. When these unexplained conditions pop up, mass hysteria is often the cause. Love content? Check out Simon's other YouTube Channels: Biographics: https://www.youtube.com/channel/UClnDI2sdehVm1zm_LmUHsjQ Geographics: https://www.youtube.com/channel/UCHKRfxkMTqiiv4pF99qGKIw Warographics: https://www.youtube.com/channel/UC9h8BDcXwkhZtnqoQJ7PggA MegaProjects: https://www.youtube.com/channel/UC0woBco6Dgcxt0h8SwyyOmw SideProjects: https://www.youtube.com/channel/UC3Wn3dABlgESm8Bzn8Vamgg Into The Shadows: https://www.youtube.com/c/IntotheShadows Today I Found Out: https://www.youtube.com/user/TodayIFoundOut Highlight History: https://www.youtube.com/channel/UCnb-VTwBHEV3gtiB9di9DZQ Business Blaze: https://www.youtube.com/channel/UCYY5GWf7MHFJ6DZeHreoXgw Casual Criminalist: https://www.youtube.com/c/TheCasualCriminalist Decoding the Unknown: https://www.youtube.com/channel/UCZdWrz8pF6B5Y_c6Zi6pmdQ Simon's Social Media: Twitter: https://twitter.com/SimonWhistler Instagram: https://ift.tt/RjDHecL →Subscribe for new videos every day! https://www.youtube.com/user/toptenznet?sub_confirmation=1 Find more lists at http://www.toptenz.net