Wer sich an folgende 3 Ratschläge hält, wird mit einer „aufmüpfigen Meute“ nicht mehr so viele Probleme haben:

„Be prepared. Every speaker must learn what her audience expects before she arrives to speak. In the case of the executive, he did not consider the fact that he was the final speaker of the day and the only thing standing between the audience and a reception. On a more serious note, if you expect people to be hostile to your message, study up on the reasons why they may be upset. You want to integrate your counter arguments into your presentation, or be prepared to deliver those arguments if questions arise.
Be flexible. If someone heckles, acknowledge it. Comedians, who often earn their stripes by performing in small nightclubs, learn early in their careers how to have fun with hecklers. Sometimes you can parry the jibes and have a quick back-and-forth dialogue. This demonstrates that the speaker is in control, not the heckler. But cut off the debate quickly and move forward with your presentation. You cannot cede control to the crowd.
Be resolute. If the shouters will not be silenced, then give the rest of the audience an opportunity to voice their opinions. Negotiate time to continue but promise to take questions from the audience as soon as you finish your remarks. If this occurs, abandon the script and speak directly to the audience. Be brief. And keep your cool. Shouting back makes you one of the mob; speaking with confidence acknowledges your authority over the message.“






http://blogs.harvardbusiness.org/baldoni/2009/08/how_to_speak_to_an_unruly_