Putting hindsight totally aside (before he fatefully climbed that ladder), how many Gun Rights advocates would've said Crimo was a 100% slam dunk candidate for red-flagging/denial of gun purchase.
It's a sad fact but, guys in his age group, often threaten suicide or harm to their immediate family during heated arguments. Crimo had no police record, made no threats against anyone but himself and family, the incidents were 3 yrs old, etc. Can we confidently state as a matter of decided precedent as we move on that anyone with his background should not be able to buy a weapon? And, for how long should that ban apply? Some arbitrary age? Lifetime?
My guess is Gun Control folks will find this an easy slam dunk answer; the strong 2A advocates, maybe not.