that's just the diversity argument, again, though.
it isn't just diversity. there is diversity here (particularly in our main cities). We also have a lot of racism and other problems here -- problems that exist in the US. We also have gangs and a drug problem, too -- and also domestic violence, rape, etc.
And yet, we don't have bomb threats and the last massacre was 1997 (
source). And
here are our crime statistics (or some of them). I won't bother mentioning terrorism per se, because I don't see NZ as much of a target compared to the US in terms of political power/etc.
And, it might be noted that Australia also hasn't seen a massacre since 1996 (
source). Australians also have an intense history of racism and a diverse population, as well as a large population spread across a large land mass. And, they have more "anti-immigrant" sentiment than NZ does overall. In NZ, over 60% of people polled felt that immigration was positive and immigrants of other nationalities (predominately asians) were an asset to the nation, whereas in AUstralia, like much of Europe, that is around and often below 50%.