19bb863a_loney_Detection___RationalWiki__Definition
[Type of fallacy] Argument from adverse consequences [Example] "If we allow people to believe the evolutionist doctrine that they are nothing but animals, human civilization will be DESTROYED in a tidal wave of immorality!" [Definition] 
Saying that because the implications of a statement being true would create negative results, it must not be true.
The Fine Art of Baloney Detection - RationalWiki
Definition