CLEAN : French artist JR stages art performance in New York to support Iranian women

The video tutorial begins with setting up a scene using cones to ensure proper spacing. The instructor provides directions and makes adjustments to the participants' positions. After final touches, an exercise is conducted. The video concludes with a discussion on cultural and social issues, emphasizing the importance of artists amplifying voices and affecting public opinion.

What does the speaker mean by 'the voice of people' in the context of the text?

In what ways does the speaker suggest that the US can help amplify the voices of those in Iran?