I'm also looking for the psychological elements that fuel commodity culture. For example, if we imbue girls with deep insecurity about their bodies through images of an impossible ideal, we create a really vulnerable and avid consumer. If somebody feels that they're not OK without a certain product, you have a very deep and loyal market that will come back to the product again and again. Sometimes, this process is both rational and irrational.

You have these relationships with people that you care about, but I also try to stick to my job as filmmaker and be fair and truthful about what I saw and my experience of the people, hopefully informed by a deep understanding of them.

I focus on a lot of women's issues.

I've also been documenting an unsustainable way of life. And you see in peoples' stories that this world of consumerism does not support the moral and spiritual values - of family and community - that people feel are most important. From an environmental perspective, the quest for more and more is not going to be possible on this planet. This is a historical documentation of an unsustainable path, and my hope is that this work allows people to think about their own agency and the potential for change.

My first book, Fast Forward, was about growing up in the shadow of Hollywood and how kids are affected by the culture of materialism and the cult of celebrity, and I've often felt the reason my work has an audience in the UK is because it's everything the British love to hate about the Americans.

During the Reagan eighties, the idea that money was a good thing - it was good to be rich; that wealth was a reflection of your character. We see this today in perceptions of Donald Trump: the idea that money is an expression of success and even goodness. I compare that with my dad's generation, where the American Dream was about giving your kids a better life, but not just in material terms. The American Dream was also about doing something good in the world. The home was at the center of the dream, but home also represented community, shelter, and stability for your family.

I'm also looking for the psychological elements that fuel commodity culture. For example, if we imbue girls with deep insecurity about their bodies through images of an impossible ideal, we create a really vulnerable and avid consumer. If somebody feels that they're not OK without a certain product, you have a very deep and loyal market that will come back to the product again and again. Sometimes, this process is both rational and irrational.