What's at stake in Hong Kong's pro-democracy movement

Chinese artist and human rights activist Ai Weiwei talks about what's at stake in Hong Kong for the pro-democracy movement. Plus, vaccine testing in South Africa, which this week became the first African country with a vaccine trial. And, a change to a refugee program in Europe could leave thousands of the most vulnerable asylum-seekers who pass through Greek refugee camps homeless.

Chinese artist and human rights activist Ai Weiwei talks about what's at stake in Hong Kong for the pro-democracy movement. Plus, vaccine testing in South Africa, which this week became the first African country with a vaccine trial. And, a change to a refugee program in Europe could leave thousands of the most vulnerable asylum-seekers who pass through Greek refugee camps homeless.