Pope Leo XIV drew an astonishing 1.2 million people to an open-air Mass in Madrid. But compared with the largest gatherings in human history, that crowd was not even close.
@paddyney counts down the biggest single-day crowds ever assembled, from funerals in India and Iran to pilgrimages in Iraq and the vast Kumbh Mela, and asks what they reveal about what human beings still care about most.
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