Last week the head of a major labour union spoke to a massive gathering of NDP supporters, thundering against corporate greed, insisting unions are needed to improve workers’ conditions, and denouncing government policies that let workers decide whether or not they want to join a union before they are forced to pay union dues.

Oops! It wasn’t actually an NDP gathering, it was the Republican National Convention taking place in Milwaukee. I should have known it wasn’t an NDP event, the NDP can’t attract massive gatherings. Donald Trump can, though, and used that ability to give Teamsters president Sean O’Brien a platform to pitch his union agenda to a national American audience.