20 cases of mass panic caused by misinformation

During the summer of 1518, dozens of people in Strasbourg reportedly began dancing uncontrollably in the streets for several days in a row. Panic gripped the population, as witnesses believed this strange behavior was caused by supernatural forces or divine punishment. 

In 1835, a New York newspaper published articles falsely claiming that astronomers had discovered bat-like creatures and advanced civilizations on the Moon. Many readers took these accounts to be genuine scientific discoveries, as the articles seemed detailed and authoritative. 

In 1938, residents of Halifax, England, began to believe that a mysterious assailant was randomly attacking passersby throughout the city. Reports quickly multiplied, and frightened citizens began patrolling the streets while the police worked to reassure the public. 

In 1938, Orson Welles broadcast a radio adaptation of The War of the Worlds, which presented a fictional alien invasion in the form of a realistic news report. Some listeners, who had started listening to the program late, mistakenly believed that the United States was under attack.

In 1944, residents of Mattoon, Illinois, reported seeing a mysterious figure who was said to have used poison gas to attack homes at night. Newspapers widely reported these frightening accounts, leading many people to interpret ordinary odors or simple illnesses as evidence of these attacks. 

In 1954, Seattle residents suddenly began to believe that thousands of car windshields were mysteriously being damaged by radioactive fallout or acts of sabotage. As media coverage intensified, people began to notice tiny imperfections they had previously overlooked. 

In 2016, social media was flooded with reports of menacing clowns spotted near schools, on roads, and in neighborhoods across several countries. Many of these reports turned out to be hoaxes, false alarms, or stories that were purely fabricated and shared online. 

In 2001, residents of Delhi reported being attacked by a strange creature described as half-monkey, half-machine. Fear quickly spread through the neighborhoods, prompting people to patrol the streets and rooftops at night. 

In the late 19th century, in several U.S. states, people claimed to have seen strange airships flying overhead, at a time when aircraft were not yet a common technology. Newspapers published sensational stories that often contradicted one another, but nevertheless managed to convince readers that something unusual was happening. 

For decades, parents have feared that strangers might secretly slip poison, razor blades, or drugs into the Halloween candy given to children. Despite this widespread concern, confirmed cases involving random attackers have been extremely rare. 

At the start of the Cold War, fears of communist infiltration quickly spread throughout American political circles and the entertainment industry. Public accusations were often based on flimsy evidence, rumors, or guilt by association, rather than on proven acts of espionage. 

In the early 2000s, rumors circulated that Pokémon encouraged gambling, conveyed hidden religious messages, or exerted a dangerous foreign influence. Some schools and officials viewed the franchise as a serious moral threat to children. These fears spread despite the lack of evidence to support these allegations. Similar reactions were observed in several countries, with parents expressing concern about the game’s popularity.

At the start of the COVID-19 pandemic, rumors of shortages prompted consumers around the world to buy astronomical amounts of toilet paper. Images of empty shelves circulated online, further fueling public anxiety. Supply chains were put under severe strain, mainly because people feared running out of products, not because production had stopped. This situation has become one of the most striking examples in recent history of panic buying fueled by misinformation.

In 2021, reports spread across Europe that nightclub patrons had allegedly been secretly injected with drugs using needles on crowded dance floors. Fear quickly spread through social media and the news, leading many people to simply avoid nightlife venues altogether. 

In the 1980s, parents spread warnings that drug dealers were giving children temporary tattoos that had been secretly coated with LSD. Schools and police departments passed on these allegations despite the lack of confirmed evidence.

On several occasions during the nuclear age, exaggerated reports have led some consumers to fear bananas, as they naturally contain tiny amounts of radioactive potassium. Although bananas do emit measurable radiation, the levels are harmless and scientifically negligible. 

Around 2018, parents began to worry after learning of allegations circulating on the Internet that a terrifying character named “Momo” was encouraging children to harm themselves through videos hidden online. Schools and police departments issued warnings as concern spread around the world, even though there was little concrete evidence.

In late 18th-century London, rumors were circulating about a mysterious assailant nicknamed the “Monster of London,” who was said to have attacked women throughout the city. Fear had gripped the population so thoroughly that armed citizens patrolled the streets in search of suspects. 

For years, chain messages warned the public about HIV-infected needles that were allegedly hidden in movie theater seats or other public places. These rumors spread widely through chain emails and early Internet forums, even though they were not based on any credible evidence. 

Even before World War II officially began, alarming reports about chemical warfare led many British citizens to fear imminent poison gas attacks. Newspaper articles and government measures exacerbated this anxiety, as families rushed to buy gas masks and emergency supplies.