The mass extinction of large animals in North America being caused by the Clovis hunters is no longer dogma. It is highly debated.
Debate is good; dogma bad. Let's then just say that the Zooarcheological evidence indicates that the late Pleistocene mass extinctions (in say, the Americas) strongly coincided with arrival of skilled human hunters. Whether aboriginal overkill or ecological change brought on by the burning of fire-sensitive vegetation is the cause of the disappearance of large mammals, it still gives lie to the silly notion that the "natives" live in harmony with Mother Nature.