The table literally says "gun homicides per 100,000 people," not "homicides per 100,000 people." Look up stats for non-gun related incidents and it'll look a lot different.
While you're at it, look up the gun ownership vs crime and homicide rate based on geography and demographics. The numbers people like you want will be found in low-income and ghetto areas and mostly black on black and gang-related incidents where you'll be able to find a lot of guns that were not obtained legally. Not all, but many. Likewise in well-developed areas where legal gun ownership and carry is commonplace, the rates are much, much lower than places with tighter restrictions.
Start by accumulating real statistics to form a more effective argument against pro 2A people. If you want to fight them, especially in a court of law, you're gonna want something that can't easily be disproven.
Next time you want to post a table without tryingto be serious, you'd be more effective going into Microsoft Paint and whiting out the top label of the graph so the statistics are more vague.
One more quick tip: if you want to prove gun ownership is bad, you also will need to prove why using bricks, molotovs, body armor, brass knuckles and concrete milkshakes is good, since they're the most favored tools Antifa if you don't let them use guns either.
