IFF you think Booing is not Freedom of Expression than you Think that Booing is not Freedom of Expression. You Think That Someone Expressing themselves by Shouting is not protected speech, it should be stifled, censored and suppressed, and at least it should be ridiculed as Idiotic Moo Cow behavior.

IFF you think booing is Freedom of Expression then You're An Idiot Moo Cow Equivalent.

Ultimately.
Moooo.

(if you didn't get it, you make a value judgement about what is and isn't Freedom of Expression)