Acid throwing
The little boy screamed "I hurt, I hurt" after the attack.
The men needed hospital treatment.
CCTV of the attack showed the little boy running to his mother.
The child suffered serious burns to his face and arm at the Home Bargains store.
Police were called on Tuesday afternoon.
He is charged with GBH.
Joanne Rand was killed in the attack.
Five others have already appeared in court, including victim's father.
They are due before magistrates later today.