expression
people will believe a falsehood if many repeat it; argumentum ad populum
Proverb meaning that a lie repeated often enough can be taken as truth. Literally 'there is a tiger in the market'.
「市に虎あり」ということわざは、多数の人が言えば嘘も真実になるという意味だ。
The proverb 'there is a tiger in the market' means that if many people say something, even a lie can become truth.