Sentence:  To show the deadly hatred they bore the white people, Thicknesse, who was the first in the town, and the person left with them as a hostage, related, that having taken up his abode with Quao, his children could not refrain striking their pointed fingers at his breast as they would have done knives, had they been permitted, calling out, “<WSD>Buckra</WSD>, <WSD>Buckra</WSD>.” 
Meaning of the word marked with <WSD> tags:  A white person.