Cast of LOTR and THE HOBBIT. Haha the two tallest person of the cast are Thorin and Dwalin, and you'd think they would be the shortest since they play dwarfs. I always think dwarves are normal sized until I see then next to elves.
The bigger the issue, the smaller you write. Remember that. You don't write about the horrors of war. You write about a kid's burnt socks lying on the road. You pick the smallest manageable part of the big thing, and you work off the resonance.