All great tales of heroes have villains. And it's good to see villains lose - the more, the better.
The practical boundaries are the law, but ideally we should in Europe have at least as strong protection of speech as in the US.
Pfff, this isn't a tale of heroes and villains, it's a sporting competition where the watcher for complete random reasons roots for one and not the other.
Yelling and booing is undignified, I didn't take you for a hooligan.