For Purdy doesn't offer a pragmatic critique of the carbon tax, and he doesn't explore whether populist social movements might directly challenge the coal industry's power.

The movement challenged the silence.

The movement was unexpected and challenged his balance.

Coming to the fore in the 1960s, an anti-psychiatry movement challenged the fundamental claims and practices of mainstream psychiatry.

Traditional values are revered, but a growing feminist movement is challenging patriarchal traditions.

Since 1979, radical Islamic movements have toppled or challenged governments from Iran to Egypt to Pakistan.

In an era when political dissent was still expressed in religious terms, the new religious movement called Puritanism challenged aspects of the established regime.

Now the landless movement is challenging him to make good immediately on an issue that is a source of shame for many here.

The landless movement and its allies are also challenging other aspects of the official land reform program.

If power is to be understood as domination, the movement does not challenge underlying capitalist structure which perpetuates oppression.