Please don't slander New Zealand, and please don't make dumb, nasty posts about this tragedy. New Zealand and the vast, vast majority of people in it are tolerant, compassionate and peace-loving, and I echo Jacinda's message that those responsible are not at all representative of New Zealand.
I personally don't blame New Zealand--I'd blame Australia if anything since it was their spawn that carried this out.
Though this comes off a bit as being less concerned with the people who were killed, or lost loved ones, and more concerned with what it does to the country's image.
Ultimately, the place they were born is not the main contributor. What happened in New Zealand is the culmination of the alt-right ideology fermented on sites such as 8-chan where he literally posted he was gonna shoot folks and they cheered him on.