Summary

A limited number of options (usually two) is given, while in reality there are more options. A false dilemma is an illegitimate use of the "or" operator. Putting issues or opinions into "black or white" terms is a common instance of this fallacy.

Examples

1. Either you're for me or against me.
2. America: love it or leave it.
3. Either support Meech Lake or Quebec will separate.
4. Every person is either wholly good or wholly evil.

Proof

Identify the options given and show (with an example) that there is an additional option.