As the saying goes "Your right to swing your arms ends where my nose begins." Shouting someone down who is speaking to an audience that explicitly came to list

As the saying goes "Your right to swing your arms ends where my nose begins." Shouting someone down who is speaking to an audience that explicitly came to listen to them in a venue they arranged for isn't "freedom of speech", it's disruptive and a form of trespass. It's also made worse by the fact most of the things being shouted when this happens is arguably slander.