Recently news has got around of a sort of selfie (instagrammar I think) taking American Christian missionary who decided to go to the Andaman Islands and convert the Sentinelese to Christianity.
The same natives who likely have semi-hostile attitude towards foreigners which could be related to M.V. Portman's expedition (with the modern day results being them shooting at helicopters that try to watch them):
M.V. Portman's contact with them
As you can tell from that title, the Sentinelese welcomed the fella with iron tipped arrows (for those wondering why I said iron tipped arrows).
BBC's American 'killed in India by endangered Andamans tribe'
John Allen Chau: Body of man killed by tribe 'may never be recovered'
It does make me wonder if we will hear news of the natives of the Island in the future dying off from what will likely be whatever pathogens or that is on John's body that gets em sick. Another lesson that shows the differences between a actual competent, experienced and trained missionaries vs. the incompetent ones who do more damage through their stupidity (or naivety if you wish to be generous and polite).