Thanks to MadHoutaro for making this awesome and sad comic, i just hope someone decide to make an animation of this touching story.
Sorry for the bad quality of the video.

Credits:

Comic:
"They Live" - MadHoutaru (http://madhotaru.deviantart.com/art/They-live-333748911)

Music:
Leaves From the Vine(Instrumental) - Avatar, The last airbender (Nickelodeon)
Peace (full)  - Avatar, The last airbender (Nickelodeon)