The insulting meaning of anti-V gesture

Nowadays, many people like to use the V-shaped gesture when taking pictures, and many people use the "anti-V" version, that is, the version with the back of the hand facing outward and the palm facing inward, but "anti-V" is an indecent action. This gesture originated from the Battle of Agincourt in the Hundred Years' War between Britain and France. The French threatened to cut off the middle and index fingers of British archers, making them disabled and unable to shoot before opening the bow. But then the British defeated the French army. After the victory, the Englishman straightened his middle finger and forefinger, palms inward, and demonstrated to the French prisoners, meaning: our fingers are complete. This action was later extended to humiliate the other party. Churchill often used positive V to express his determination to win during World War II, but in his post-war political career, he often used "anti-V" to insult his political opponents, so "anti-V" represented an indecent move.