ASUNCIÓN, Paraguay — His speeches can blend biblical fury with apocalyptic doom. Pope Francis does not just criticize the excesses of global capitalism. He compares them to the “dung of the devil.” He does not simply argue that systemic “greed for money” is a bad thing. He calls it a “subtle dictatorship” that “condemns and enslaves men and women.” Having returned to his native Latin America, Francis has renewed his left-leaning critiques on the inequalities of capitalism, describing it as an underlying cause of global injustice, and a prime cause of climate change. Francis escalated that line last week when...