I have known for years that the online Left was losing the moral plot. But if you had told me that one day they would celebrate the slaughter of a man from a humble background in which the suspect is a swaggering rich kid, even I would have struggled to believe it. This, at root, is what the creepy idolisation of Luigi Mangione represents. Strip away all the TikTok guff about him being a modern-day Robin Hood. Ignore the apologetics of Leftish talking-heads who fantasise that Mangione has stuck it to The Man. For what we’re talking about here is...