On 12 September 2015 Jeremy Corbyn won Labour leader by a landslide and then went straight to speak to the big refugee rights demonstration in London. This article is from Solidarity 375, just before the voting ended.
Don't mourn, organise", the American trade union activist Joe Hill famously told his comrades in 1915 as he was railroaded to a firing squad on trumped-up murder charges.
If Jeremy Corbyn wins Labour leader on 12 September, we should flip that motto into "don't celebrate, organise!" And if he has a near miss, Joe Hill's original will do.