Khoi groups raided Dutch settlements as organized resistance

Evidence

Khoisan resistance kicked in quite early. Suspicious already from nominal Portuguese encounter at the close of the fifteenth century, Khoi fears were exacerbated dramatically in the first half-century of Dutch settlement, marked by sometimes brutal slave practice and extensively stolen livestock. By the early eighteenth century various Khoi groups, fed up with the heavy hand of settler intrusion, began raiding Dutch farm outposts more or less frequently, sometimes in alliance, making off, often brazenly, with a considerable bounty of cattle and sheep. — David Theo Goldberg, The Threat of Race, 1366