Preview: Link Voices, Season 2

Over 65 years ago, when Costa Rica became the largest nation in the world to disband their military, they redirected national resources towards public education and universal health care, fostering a wide middle class and a society committed to inclusion. Since then, Costa Rica has earned the number one spot in the Happy Planet Index, a ranking of countries based on measures of environmental protection and the happiness and health of its citizens.

"Wall" follows British playwright David Hare on a trip to the Middle East to examine the impact the wall separating Israel and Palestine has had on the people of the region. The feature-length film is an animated take on real-life events.

"Defiant Lives" traces the origins of the world-wide disability rights movement. It tells the stories of the individuals who bravely put their lives on the line to create a better world where everyone is valued and can participate. Featuring interviews and rarely seen archival footage, the film reveals how these activists fought to live outside of institutions, challenged the stigmas and negative image of disability portrayed by the media, demanded access to public transportation, and battled to reframe disability rights as a social responsibility relevant to us all.

The West African country of Mali is a birthplace of the blues, a musical tradition later carried by the transatlantic slave trade to America's cotton fields. Yet today, the music and musicians of Mali are in grave danger. As fundamentalist Islam and sharia law become more widespread, dance and secular music are prohibited, musical instruments are destroyed, and musicians are forced to flee their homeland.

Three residents in the Lower Rio Grande Valley of Texas find their lives upended by plans to build a US-Mexico border wall. Meanwhile a butterfly, la mariposa, fights its own daily battle for survival in a landscape where 95 percent of its habitat is gone, and the rest lies directly in the path of the wall.

Every year tens of thousands of people are driven by grinding poverty and conflict to leave their homes in Central and South America and journey through Mexico towards the U.S. They brave one of the world’s most dangerous journeys, traveling along a stretch of desert called the “corridor of death,” for the chance of a better, more secure life for themselves and their families.

Before the 2016 Rio Paralympic Games, Azzedine Nouiri, the world champion in seated shot put, inspires his childhood friend Youssef to take on the challenge of qualifying for the Games despite their lack of means and formal training. They struggle to conquer the extraordinary in order to have the same rights and opportunities as ordinary men at home, in Morocco.

On the front line of the Syrian war, 30-year-old Commander Arian guides a female battalion towards the city of Kobane to release its people from the grip of ISIS in Alba Sotorra’s empowering tale of emancipation and freedom.

South Africa's Public Protector, Thuli Madonsela, attempts to bring justice to ordinary people. After successfully challenging President Zuma for illegal use of state funds, she has to investigate — in the face of protests, death threats and legal challenges — the alleged systematic takeover of the government by a private family in cahoots with the President.