There really is no specific anthem for emo kids because they all have slightly different choices in their x.core music. However, most emo anthems would usually have lyrics about suicide, how their life sucks, how the world sucks, how their girlfriend/boyfriend dumped them...it really depends on the occasion of the listener.
Some emo kids' anthems could be the following:
1. I'm not okay (I promise) --> MCR
2. Note to self --> From First To Last
3. Dead and Gone --> I Am The Avalanche
4. The truth about heaven --> Armor For Sleep
5. I don't feel very receptive today --> Underoath
Emo-kid: "I am so not conformist and my emo anthem is not on the list...ooo SO THERE" *sniffle*