What does it mean to be an active citizen? It's about more than just voting and paying taxes, says social entrepreneur Gabriel Marmentini. He explains why we can't rely on the state alone to solve all our problems — and presents the four key ingredients for anyone to become a change-maker and engage in solving public issues.

Conversation is a battlefield with only one winner. Or is it? Comedian and author Jordan Klepper believes we can get better at talking to each other (and perhaps save democracy) by learning how to lose.

How much should business leaders speak out about threats to democracy? It's a question many corporations are wrestling with these days. Business and democracy leader Daniella Ballou-Aares shows why companies have both the ability and the responsibility to engage in protecting elections and the rule of law — and why their bottom lines may depend on doing so.

On paper, law professor Samar Ali and public affairs strategist Clint Brewer seem to come from very different — and perhaps opposing — backgrounds. But their friendship shows why political polarization in the US isn't as intractable as we might think. In an enlightening conversation, they talk about how to address deepening divides in the US and around the globe — and show the value in discarding the "scare script" by which we demonize others. (This conversation is hosted by TED curator Cloe Shasha Brooks.)

We don't have to sacrifice our freedom for the sake of technological progress, says social technologist Divya Siddarth. She shares how a group of people helped retrain one of the world's most powerful AI models on a constitution they wrote — and offers a vision of technology that aligns with the principles of democracy, rather than conflicting with them.

"A flourishing democracy next door is a scary thing for an autocrat," says Ukrainian historian Olesya Khromeychuk. Detailing the history of Ukraine's long struggle for sovereignty and freedom — against Russian tsars, communist dictators and now the Kremlin's army — she shares three lessons anybody can use to join the global fight for democracy.

Our brains are hardwired to crave community and belonging — a tribal instinct that drives politics in the United States, says political strategist Sarah Longwell. She shares what she learned trying to convince people to vote against their political party in a recent election and shows why telling a better story about democracy is key to bridging the ideological divide.

"Democracy is more fun and inviting when you take it into your own hands," says creator and activist Sofia Ongele. Sharing how she's using coding and social media to defend democracy, Ongele invites us to identify our own creative superpowers — whether it's community organizing, making music or telling stories — and use them to cause a ruckus and bring movements to life.

"Today, Hungary is in the gray zone between a dictatorship and a democracy," says activist Tessza Udvarhelyi. "This did not happen overnight." In a rousing talk, she reminds us just how close any country can come to authoritarianism — and offers on-the-ground lessons for how to keep democracy alive through focus, determination and imagination. (Followed by a brief Q&A with TED curator Cloe Shasha Brooks)

We're fast approaching a world where widespread, hyper-realistic deepfakes lead us to dismiss reality, says technologist and human rights advocate Sam Gregory. What happens to democracy when we can't trust what we see? Learn three key steps to protecting our ability to distinguish human from synthetic — and why fortifying our perception of truth is crucial to our AI-infused future.

"Democracy is the most compelling vision we have for self-governance," says freedom advocate Yordanos Eyoel. Taking a stand against predatory and opportunist authoritarian forces, she shares how to reimagine, accelerate and protect the pro-democracy movement — to build societies that are both functional and inclusive.

South Africa transitioned to democracy in the 1990s with a visionary constitution, but the promises of that constitution are largely unfulfilled to this day. Public leader Lindiwe Mazibuko explores how poor leadership failed to deliver a better life for the country's citizens — and shares her mission to cultivate a new generation of ethical leaders who can revitalize democracy in South Africa and beyond.