Labor and the Greens don't get along. Here's why

Relations between a centrist Labor government feeling its way and an ascendant Greens party have become surprisingly strained of late.

The rancorous tone of public exchanges reveals deep-seated enmities born of an increasingly direct electoral contest in the inner cities, legitimate policy differences, and a hyper-sensitivity to criticisms made of each other.

A current flashpoint is Labor's housing policy,