Actually, NZ was colonised by the Maoris. But that's deflecting from the argument.
Attack the establishments that you've allowed to flourish through inaction. Attack your broken government systems, that is constructive. Picket outside the White House until Trump has no choice but to step down. Picking on white people simply because they’re white is short sighted.
When you generalise it negates everyone's experience.
And no ones claiming racism doesn't exist. It simply doesn't exist for black people in places where there are no black people. That's logic.