The theory often presented goes something like "More Guns = More Crime." Using the theory, I decided to see if it holds water. Here is what I found. Feel free to try it for yourself!

NRA 2017 Annual Meeting
Meeting Dates: April 27-30
Location: Georgia World Congress, ATL GA, 30313

Crimes:
03/31 to 04/02: 241 incidents
04/07 to 04/09: 260 incidents
04/14 to 04/16: 181 incidents
04/21 to 04/23: 95 incidents (vendors arrive to set-up displays)
04/28 to 04/30: 73 (Actual convention dates)
05/05 to 05/07: 140 incidents
05/12 to 05/14: 97 incidents

NOTES
§ The number of incidents varies with your device size and zoom level!
§ On my laptop, I maximized my browser (Firefox) by pressing the F11 key.
§ — My screen resolution is 1600 x 900 pixels.
§ I placed downtown Atlanta in the center.
§ I zoomed OUT until all incident counts/data disappeared.
§ I Zoomed IN one click to get maximum data.

SOURCE:
https://www.crimereports.com/city/Atlanta%2C%20GA#!/dashboard?incident_types=Assault%252CAssault%2520with%2520Deadly%2520Weapon%252CBreaking%2520%2526%2520Entering%252CDisorder%252CDrugs%252CHomicide%252CKidnapping%252CLiquor%252COther%2520Sexual%2520Offense%252CProperty%2520Crime%252CProperty%2520Crime%2520Commercial%252CProperty%2520Crime%2520Residential%252CQuality%2520of%2520Life%252CRobbery%252CSexual%2520Assault%252CSexual%2520Offense%252CTheft%252CTheft%2520from%2520Vehicle%252CTheft%2520of%2520Vehicle&start_date=2017-04-21&end_date=2017-04-23&days=sunday%252Cmonday%252Ctuesday%252Cwednesday%252Cthursday%252Cfriday%252Csaturday&start_time=0&end_time=23&include_sex_offenders=false&lat=33.762909&lng=-84.422675&zoom=13&current_tab=map&shapeIds=