kangaroo culling - Australian policy?

Ross Garnaut's long awaited Climate change report has arrived. There was some hope that he would make some recommendations against the keeping and slaughter of animals, and he has somewhat, admitting that raising millions of sheep and cattle for slaughter is not in any way good for the environment or climate change. However, all he has done is say that these animals numbers should be slightly reduced and the meat from them replaced by slaughtering more Kangaroos. No win then for animals, but then when is there.

Kangaroo cull video

I know I said I wasn't going to continue on the animals stuff, but there you go. I was just pointed to some videos of the kangaroo cull that recently happened here in Canberra. So here's one. The footage is of guards and vehicles driving the kangaroos into the killing pens.
I also noticed there are a few Japanese videos on YouTube deriding Australia for opposing killing whales whilst conducting the biggest land slaughter of animals of anywhere in the world (over 3 million kangaroos are killed each year here).