The natural, phenotypic expression of a pathogenic cellular alteration--caused by complex social, political, economic, and environmental processes.
Although the disease cancer did not begin with the industrial revolution, it is now a major component of it because one of the most profound consequences of the event was an increase in average life expectancy particularly for those of us who live in the so-called industrialized world. Cancer needs time to develop. Another consequence, of course, has been an increase in environmental toxins as a result of our economic activity. Cancer is stimulated, biochemically, by carcinogens like those found in pesticides.
Whiners, people who scrounge off the welfare state, other socialists and commies, gormless anarchists, woolly liberals, human rights campaigners, people who play the race card, militant atheists, educated aristocrat playboys, union workers, animal rights activists, arable farming religious nuts or anyone else who contributes nothing to the furtherment of the human species.
Not all the idiots are leftists, but most of them are, which explains why they're still poor.