They live deep in Peru’s Amazon rain forest, but recently the Mashco-Piro clan is stepping up contact with the outside world.

Not all of the encounters are friendly though. Some even end in death. Society brings danger to the “un-contacted” tribe too.

Correspondent Dan Collyns reports on the challenges of changing the relationship between this isolated tribe and the modern world.

Watch Americas Now, Sunday at 6 p.m. eastern or 7 a.m. Beijing time on CCTV America.

You can also watch via your web-connected device at:

www.cctvamericalive.com