I thought you were using the info in the graphic to suggest that since white people own more guns, gun control laws won't disproportionately affect people of color.
Indeed, that is my conclusion.
It seems that white people generally like to (legally) own guns more than either black or hispanic people, so they would be affected more by restrictions on the ownership of firearms.
Let's face it... the idea is to limit the availability of very dangerous weapons (automatic rifles) and make it harder for people who either have a history of mental illness or terrorism affiliation to get guns in general, in order to make it more difficult for mass shootings (or just simple ones) to occur.
How many mass shootings perpetrated by people of colour can you remember?
To me, only the "sniper" case a few years back comes to mind...
So my question, how do you explain to me that such laws will affect people of colour more (I understand your use of the word "disproportionately" to mean more).
I understand that regrettably the current interpretation of the (hardly) existing gun laws by the police is something like
"White person wielding an assault rifle = upstanding patriot exercising his constitutional rights", while
"Coloured person wielding an assault rifle = armed thug/terrorist, up to no good, to be shot on sight"
But, if it was forbidden for everybody, that might actually reduce this discrepancy....