social cancer

A cancer of the mind becomes indifferent to felons being bussed in to vote for more socialism

A cancer of society that sits on its hands when children are slaughtered moments after conception -- an atrocity that makes abortion seem insignificant

The infection caused by tolerating federal-, state-, and local socialism

Social Cancer is a trend that grows quickly and can, but don't always, remain for a long time. Social Cancers can be cults, events, items, etc.
Some examples are:
Harambe
Fidget Spinners
Kekistani
Literally anything that is pervasive in a culture

When you parents cut you off from all social contact and the cells in your feet start reproducing so that you cannot move, not like you could go any where in the first place though.