Velonut - as you can imagine...the prayers are to help begin a healing...they add comfort to peoples lives who have just been ripped apart and the national dominoe effect that is...
To your next point...it should be a universal Weapons Control...because it is not just about guns...
Better Control of Mental issues...Eliminating Violent Video Games...Improving Awareness & Vigilence towards violent tendancies / signs of which can easily be masked under "kids being kids" at early stages...Offering overwhelmed parent support...and a host of 1,000 different things to combat evil...and evil doers.
Unknown...yes...always unknown...but strangely...isn't there always that one or two people who come "after the fact"...well...this person started / did this or that interesting act recently...
Actions do speak loudly...
Sweeping weapons control is a start. But this does NOT contain the weapons that exist.
But while on the subject...you CAN begin to control the ammo and make it very difficult to get the bullets...there are(4) pieces to the ammo. Commercially made ready ammo should not be sold without umpteen different security checks...and for self-loaders...you control lead sales, brass case sales, primer, and powder sales at the most strict levels.
You make the places that manufacture and sell these put tracking measures on each box, unit, etc. These places must be the most secure places. Actually...there should be just ONE place for this...that everyone has to go through and be scrutized for asking to buy any component...accessory involving guns...
This will not control what is out there already...or stop thieves.
But it is a start...
Ask people to volunteer their weapons turn in? Successful in some pockets.
Eliminate manufacture of all commercial weapons all together? Likely not in our lifetime.
Too many places to consider...too many out there right now...but yes...start somewhere.
For now...please pray for those families that have been forever changed today...yesterday..because there are people who don't understand the value of a Life that was meant to be lived in peace...and love.