Plagues, locusts and temptation in the desert: Birds of Passage is biblical in its grandeur and moral ruin. The current cultural fetizishation of drug cartel savagery is vampiric and lazy racism. Can-you-believe-this travelogues and “dark tourism” tours take the cash of white hipsters to show them the houses where monsters lived, while much TV and film deploys stock montages of whirring cash counting machines, biped planes stuffed with narcotics and South Americans going loco, bro. But Cristina Gallego and Ciro Guerra’s follow-up to 2015’s Oscar-nominated Embrace of the Serpent cuts through the fake glamour and returns to the roots of…