Joker shoots Barbara Gordon. The injury that paralyzed her, ended her career as Batgirl & paved the way to her becoming Oracle (from the graphic novel Batman: The Killing Joke by Alan Moore and Brian Bolland)
Alan #Moore - Saga of the Swamp Thing Vol. 1 - The issues collected here were groundbreaking not just for Moore but for comics as a whole. Swamp Thing was reportedly the first series that abandoned the Comics Code and composed solely for adults, and Moore’s issues created characters like John Constantine and crossover successes like Hellblazer and The Sandman.