Ironically, a bolt-action hunting rifle which is legal in all 50 states would be a much better choice for an assassination attempt than “assault rifles” like an AR-15 or the even less accurate AK-47. So not only can they not shoot, they apparently don’t know anything about rifles either.
What you are describing is actually the simple truth that many worldviews and the beliefs and values that stem from them are incompatible and cannot coexist. This is the fundamental problem with the first ammendment. It assumes that people are exercising beliefs that are not diametrically opposed to each other.