Fallacy of Relative Privation
The Fallacy
Saying a problem doesn't matter because there are bigger problems somewhere else.
Why it's wrong
Just because there are huge, terrible things happening in the world doesn't mean smaller problems aren't still problems. It's like saying you shouldn't cry about a scraped knee because someone else broke their arm.
Example
Why are you complaining that your toy broke? There are kids who don't have any toys at all!
What the Fallacy?! (ELI5 Edition)