It's rude to sing loudly over other people's objections.
Mary has helped organize a protest at her college about the prevalent rape culture on campus.
Mary wants the college president to acknowledge their efforts.
When the president opens dialogue with the protesters Mary agrees to sit and talk to him.
When the president attempts to address the protesters Mary encourages the students to sing loudly to disrupt him.
Mary is able to get the president to agree to meaningful changes.
Mary fails to influence the president to their cause.