Answer:
Slippery Slope
Step-by-step explanation:
Based on the information provided in the question it seems that Aaron is using a Slippery Slope reasoning fallacy. This fallacy refers to when an individual claims that a when a relatively small event occurs it causes a chain or events to unfold that end up in some big and significant effect. Which seems to be the case when he states that "if politicians ban automaitc assault rifles then it will eventually cause mass school shootings every day".