incorrect. my argument against it is that you would be trampling on the personal liberties of people who value those liberties greatly, in an effort to achieve a relatively paltry gain in public safety (i also agree with those that have commented on the probable futility of the effort, but i haven't advanced that argument myself).
as a part of that argument, i've queried why there is such a focus on the cause of this particular tragedy. there are easier problems to solve, and there are greater problems to solve. why this tragedy, this cause, if not merely as a knee-jerk emotional reaction to media coverage waived before your nose like a squirrel before a terrier's?
i do think it is nothing more than emotional writhing, and i don't think that's a convincing basis for policy decisions.