10 Times The Justice League Went Way Too Far
5. Flashpoint
One of DC's most personal crisis crossovers/reboots, Flashpoint examines Barry Allen's (very understandable) desire to save and be reunited with his deceased mother, but his choice changes the world for the worse and places it on a path to annihilation.
In an attempt to stop Reverse Flash from killing his mother in the past, Flash unknowingly creates a reality where the Justice League does not exist, Captain Cold is Central City's greatest hero and Aquaman and Wonder Woman have waged a war against each other that decimated parts of Europe and threatens the world.
Barry, alongside Batman (Thomas Wayne) and Cyborg, attempt to stop the war and reset the timeline.
The Flash's wish to save his mother is by far more honorable than other instances on this list but the consequences are dire and threaten to tear the DC universe apart.
Fortunately, Barry resets the timeline again and it takes shape in the New 52 series of comics, but the comic is a reminder of how seemingly small changes can be devastating, especially in a universe as turbulent as DC's.