Whenever you are made to choose between two only options: a terrible one and some other one, which you are being tricked into choosing.
Source, Wikipedia
The false dilemma logical fallacy involves a situation where two ideas are shown as the only possible choices, when, actually, there are other options that have not been considered. Usually, but not always, the presented alternatives are the extremes on a spectrum of possibilities. Instead of such extreme simplifications, it is often more appropriate to consider the full range of options, as in fuzzy logic.
Example
If my political party does not get elected, the current situation will turn into chaos, violence and tragedy.
To refute it
The fallacy can be dismantled by clearly listing all the other options while supporting why they are viable, preferable choices.
Whenever the source is not referenced, both definitions and examples have been extracted from a translation of Jaime Wilson jwilson@bytecr.com based on Stephen’s Guide to the Logical Fallacies. Copyright 1995-1998 Stephen Downes. Brandon, Manitoba, Canada.
These texts have been modified by Miguel A. Lerma and now by us to adapt them -and those taken from Wikipedia- to our format.