Here are Roggeveen's logs during the time he visited Easter Island. Nowhere does he mention 'whites, indians and Polynesians living in harmony'; he does, however, describe the natives' complexions as varying, some paler than others. Also, 'Polynesia' was not a word until 1756, 27 years after Jacob Roggeveen's death. He used the term 'Indian' to describe the native people he found.

Seeing as Khnagar has not provided any kind of citation for his outlandish claim, his post itself is about as reliable as hearsay. You haven't "learned" anything unless you know you can verify it.

Where did you get the viking idea from? It's most certainly false. Vikings reached Eastern Canada, where they largely gathered timber from.

There's absolutely no evidence that they got anywhere near Easter Island (which is in the Pacific ocean).