Involved nuclear materials. And child labor in bolivia where kids work legally from the age of 10. They can only dream of going to school. Leila im a lahore rock. A very warm welcome to viewers on pbs in the United States and around the world. Chaotic scenes have unfolded at Hong Kongs International Airport where dozens of right police crashed with propolice demonstrators. Hong kongs chief executive warned protesters that the city is on what she called a path of no return. It is shut down day to, and theres serious anger from protesters toward the police. With protesters clearly losing their cool. Demonstrators claim this man was an undercover policemen, and shortly afterward, he is attacked. Eventually, medics secure his release. Protesters continue to apologize to frustrated travelers. I need to see my family. [indiscernible] carrie lam, hong kongs leader, is fearing or threatening the worstst. Hongg kong society has become insecure, unstable, and violent. No matter who is perpetrati