Black-or-White

The black-or-white fallacy is a false dilemma fallacy that unfairly limits you to only two choices.

Example:

Well, it's time for a decision. Will you contribute $10 to our environmental fund, or are you on the side of environmental destruction?

A proper challenge to this fallacy could be to say, "I do want to prevent the destruction of our environment, but I don't want to give $10 to your fund. You are placing me between a rock and a hard place." The key to diagnosing the black-or-white fallacy is to determine whether the limited menu is fair or unfair. Simply saying, "Will you contribute $10 or won't you?" is not unfair.