What the Fallacy?!
Appeal to Emotion
The Fallacy
Manipulating an emotional response in place of a valid or compelling argument.
Why it's wrong
Appeals to emotion include appeals to fear, envy, hatred, pity, pride, and more. It's important to note that sometimes a logically coherent argument may inspire emotion or have an emotional aspect, but the problem and fallacy occurs when emotion is used instead of a logical argument, or to obscure the fact that no compelling rational reason exists for one's position.
Example
Rather than explain why the new security camera system was necessary, the salesman simply showed terrifying images of burglaries and asked the homeowners if they truly loved their family enough to keep them safe.