Stats, shmats. The only way to prove gun ownership doesn't discourage crime is to outlaw them and see what happens. I think one side effect is that home invasions would skyrocket. People will end up being murdered, raped and kidnapped right in their own homes.
If stats didn't mean anything, why did you refer to statistics to support your view when you noted the white homicide rate?
You can't use them to try to prove your argument then dismiss them when they contradict your argument.