Modem humans, Martin said, created havoc as they spread through the Americas, wielding spears to annihilate animals that had never faced a technological predator.
After Billy's parents are killed he moves home to care for his little brother Johnny, who is mentally challenged. Together the two struggle through the loss of their parents.
"One of the sessions that moved me the most was state violence on black women and black girls," says Chasin, explaining that in one room, people wrote down the names of those killed because of it.
Dog-fighting victims are tortured and killed for profit and "sport", yet their criminal abusers often receive a minimal sentence for causing a lifetime of pain.