Let's Start With No.

The Detroit News: Gun control advocates rally at Michigan Capitol

More than 100 gun control advocates rallied Thursday at the Michigan Capitol, urging the state’s Republican-led Legislature to enact new “common sense” regulations after a teen gunman last week killed 17 people at a Florida high school.

Common sense in this case includes things that are already the law, and banning stuff they don't understand because it scares them rather than concrete steps to stop mentally ill persons from committing these acts and making it harder for schools to be attacked. Banning stuff is easy - actually trying to solve the problem is hard.

Let's put it into perspective:

There are currently at least 6 million AR-15 type firearms in circulation in the United States. Probably many more than that, and the call to ban them will only increase this number.

If we take very school and terrorist shooting where an AR15 gets used in a mass shooting we have 7 incidents - Newtown, Connecticut a school shooting by someone mentally ill and known to be so before the fact; Aurora, Colo. a theater attack by someone mentally ill and known to be so before the fact; Santa Monica a college shooting by a mentally ill person and known to be so before the fact including by police who had informed him he was not eligible to purchase a firearm and San Bernardino, Calif. an ISIS terrorist attack; Orlando, Florida an ISIS terrorist attack; Las Vegas Nevada which is still being investigated and motive not understood or known but likely due to some mental issues; and Parkland where another mentally ill individual well known to police is committing a shooting.

So, that's five attacks and we'll generously increase this from 5 to say 24 AR-15s as the Nevada nutcase brought a lot with him, regardless of whether they were actually used or not.

24 out of 6 million is 0.0004% of all AR-15s out there being used in a mass shooting. That's almost a rounding error in statistical terms.

If the only purpose of an AAR15 is to kill, as claimed by the gun banners, it is clearly not doing the job they claim it was designed to do.

So for the acts of 5 people, two driven by terrorist sympathies and the rest by mental illness, we want to ban something legally owned by millions who have hurt no one.