Defender:
You raised one of the arguments the Watchtower tries to utilize in making its point that Babylon the Great is False Religion.
The scripture at Rev 18:24 is hyperbole. "Yes, in her was found the blood of prophets and of holy ones and of ALL those who have been slaughtered on the earth."
The same is said about the political entity of Ancient Babylon. Jeremiah 51:49 "Not only was Babylon the cause for the slain ones of Israel to fall but also at Babylon the slain ones of ALL the earth have fallen."
Don't put any more significance on this then that Babylon the Great is responsible for a lot of blood shed.
The USA makes deals with the ruling elites in various countries to keep the raw materials flowing. These elites starve their subjects and cut them out of the benefits they deserve. Pinochet, Somosa,Batista, Marcos, Shah of Iran, Saud family even Sadaam have been friends of the USA to the detriment of their people. The Taliban? Weren't they the great freedom fighters the CIA created to fight the USSR in Afghanistan? Globalism has a bloody pedigree.
Jehovah's Witnesses are not the only ones who will be saved. Even those who die at armageddon get a resurrection. But Jehovah's Witnesses will be the ones saved by escaping the USA before it is completely destroyed. No one else is going to understand or believe they have to flee. Even JW's don't understand this ...YET! But they will.