[I just wrote a rather long comment at The Hand Mirror about battered women and provocation, in response to people suggesting we need to maintain the partial defence of provocation to protect battered women. I am reproducing it here as it shows that the provocation does not help battered women, in fact it only protects their abusers]
The Law Commission has done a lot of work on this, and it appears that the provocation defence is not of value in “battered women syndrome” killings, so we lose no protection for women victims of domestic violence by repealing it.
The Law Commission did a piece of work which focussed solely on defences for battered defendants completed in 2001 (Some Criminal Defences with Particular Reference to Battered Defendants – NZLC R 73. It shows that provocation is not an effective defence for battered women, and even that it has been successfully used by a perpetrator of domestic violence.
In R v Tepu a man successfully used provocation as a partial defence when he beaten his wife to death â€“ her provoking act? going to the Police when he severely beat her
Partly in response to recommendations in that report the mandatory life sentence for murder was abolished in 2002, and judges have sentencing discretion for battered defendants.
From 2004 to 2007 the Law Commission did work specifically on provocation (The Partial Defence of Provocation) resulting in a recommendation for its repeal. As part of that they rechecked there would be no disadvantage for battered women and, in fact, did some handy stats.
Of the 81 homicide trials they looked at (2001 to 2005, Auckland and Wellington) in 15 provocation was used as a defence. In only one of those was provocation used as a defence by a woman. In that case, while the killer had experienced domestic violence, she killed her husband because he said he was leaving her. I won’t copy the description here (see p103 of report if you really want to), but it’s exactly the kind of killing-someone-because-they-say-they’re-leaving that we shouldn’t allow to be called manslaughter.
So there were go, the Law Commission has worked really hard on the issue, and provocation is not helping battered women who kill to protect themselves.