According to today's Telegraph the epidemic of booing at the Paris Open is partly caused by the availability of alcohol, not from bars, but from multiple vendors around the ground. The crowds are booing because they are 'sozzled'....you might be able to read it but most of the time Telegraph articles are hidden behind a paywall. So here are alternatives. It is ugly, and ungracious -or is it vox pop?

Is booing common in American sports?

French Open 2023: How booze transformed Roland Garros into a seething pit of hate (telegraph.co.uk)

American Taylor Fritz shushes booing French Open crowd after he beats French player (sportsnet.ca)

Kasatkina hits out at French Open crowd over booing after defeat to Svitolina | The Independent