"Therefore, as of this day and hour the mighty Injustice Society of the World declares ear on the forces of law and order! We will wipe truth and justice from the Earth! Take heed! Join our growing ranks... or die!" -- Dr. Mid-Nite (reading Carlton Swayne script).
The original Injustice Society of the World attempted on numerous occasions to take over the United States. Their first plot involved releasing hordes of criminals from prison to serve as their army, substituting android clones of important government and business officials and ultimately organizing a Kangaroo Court against the Justice Society. They were opposed and defeated by the heroes. The current incarnation of the Injustice Society was organized by an inter-dimensional being known as Johnny Sorrow,bent on avenging himself and other villains for wrongs he believed to be committed against them by the Justice Society.
"And We will destroy them! We must bow not to rest until truth and justice are driven from the Earth and evil reigns supreme!" -- Brainwave (Henri Roy).