Who killed Ernie?

Stuff reports:

The late activist Helen Kelly blamed the deadly 1984 Trades Hall bombing on a climate of “anti-union hysteria” promoted by then-prime minister Sir Robert Muldoon, according to an upcoming documentary.

No surprise that Kelly held that view, but no one knows who did the bombing or why. It was a terrible crime and I wish we knew who did do it, as they should be in jail. But claiming to know the motivation of the killer, when you don’t even know who the killer is, is unwise.