I know, which is why we need better integration and better checks on who exactly is coming into the country, no argument there - good, I'm glad we agree on something.
What we don't need however is a quota on skin colour ratios - this depends.
If whites are being outbred by other ethnic groups, then I believe we need to keep whites the majority.
As for the Sentinelese, their motivations may be pure to a degree, but their methods of dealing with visitors is nothing to be admired - the Sentinelese want nothing but to live on their island, their traditional home. They violently repel outsiders.
Are the Sentinelese racist? Y/N?