As any Catholic master of ceremonies will tell you, it takes only the tiniest sartorial mishap to lend a Python-esque flavour to moments of the utmost solemnity. On 1 July the rebel traditionalist Society of St Pius X (SSPX) created four new bishops in defiance of Pope Leo XIV during a five-hour open-air Latin Mass in a Swiss alpine meadow. The consecrating prelates wore dark-red velvet chasubles over scarlet-and-gold dalmatics with matching gloves. They descended from their thrones bearing sacred chrism. Afterwards the new bishops stood in a row, mitres perched on their heads for the first time. For traditionalist...