"The Carnival in Venice was first documented in 1296, with a proclamation by the Venetian Senate announcing a public festival the day before the start of Lent. Unquestionably one of the most well-known Carnival festivities in the world, the Carnival of Venice is rife with mystery, adventure, and conspiracy. The day served to break down barriers between people of different economic standings and religious beliefs. During the Renaissance, masked comic performers performed in Venice's piazzas."

https://en.wikipedia.org/wiki/Carnival_in_Italy#Venice

"The tradition of wearing masks seems to stem from the 13th century. During the ages the Venetians disguised themselves with mask whenever they thought necessary. It allowed them to escape from the rigid rules of the class hierarchy. All classes could mingle, men could be women, women could be men. It also led to unwanted behaviour, from throwing eggs filled with ink to all imaginable kinds of vulgarities. Masks made people unrecognisable, so they could not be prosecuted.

Near the end of the Republic, the right to wear masks in daily life was severely restricted. By the 18th century, it was limited to three months starting at December 26 and ending on the last day of Carnival, Shrove Tuesday. Masks were also used in ceremonies, eg. when ambassadors arrived and at the five ritual grand banquets offered each year to Venetian dignitaries by the doge. This resembles the Masquerade Balls during Carnival nowadays. Venetian noblemen and noblewomen wore a costume called a bautta consisting of a white mask (volto), a tricorn hat (tricorno), a hood worn under the hat (zendale) and a tabarro, a loose-fitting cloak. There were subtle differences between noble and non-noble (cittadini or popolani), and the popolani were known to wear more colorful, fun masks to festivities like the bull runs."

https://www.carnival-in-venice.eu/venetian-carnival-masks.ht...