How many times have we seen shots of Labour party leaders declaring unity while standing in front of caucus members, smiling the kind of smile you produce by sucking air through your teeth?
Labour doesn't need more protests of unity. It needs more open debate.
People used to join the Labour party for the policy fights. A contest of ideas was how you sorted good ideas from bad. Achievements like paid parental leave and the nuclear free policy were achieved only after advocates won the argument; Unity was earned by debate, not by shutting debate down and pretending there was no diversity of opinion on these issues.