PM calls for Barnaby Joyce to be sacked for telling voters to use votes as 'bullets'

In short:

• Barnaby Joyce told protesters at a wind farm protest rally to use their ballot paper as bullets to "say goodbye" to the prime minister.

• He apologised and conceded the metaphor wasn't appropriate when presented with footage of the rally on Monday morning.

What's next?

• The prime minister has challenged Peter Dutton to sack Mr Joyce from the shadow cabinet.