What the Fallacy?!
Slippery Slope
The Definition
Asserting that if we pass political policy A, then extreme outcome Z will eventually happen, therefore A should not be passed.
The Explanation
This avoids engaging with the actual policy proposal and instead shifts attention to extreme hypotheticals, usually leveraging fear to manipulate voters.
Political Example
If we pass this bill requiring background checks for certain purchases, next they'll register everything we own, and eventually the government will confiscate all private property.