They conquered the Earth by Saturday.
Some humans simply went mad, unable to deal with the vegetable voices in their supermarkets, in their stomachs. Other humans required more emphatic persuasion to submit.
A cabbage moving at high speed suffers little damage when impacting a human skull.
The skull is not so lucky.
That Sunday, mass funerals were held for the victims of coleslaw violence outside of every KFC. All countries, led by cabbage rulers, declared peace.
At least the world was finally in harmony.
Until the next Thursday, when the rutabagas started talking.