Unsure how this is relevant to my question.
The assassin could have made the shot with a bolt-action, which is considered "not a scary military-style weapon!" (yet).
Some of the deadliest attacks in history have used pistols and shotguns, which are also deemed "not scary military-style weapons!" (yet).
Your friends are right. Regulations infringe on the rights of law-abiding citizens, and criminals will do crazy things regardless. Seizing 20 million+ AR-15s that were never, and would never, be used to commit such atrocities does not seem like a plausible solution to this problem.
So, my question remains. Why don't we learn what prescriptions these lunatics are on?
