Warning: SPOILERS for The Flash season 8, episode 7, «Lockdown.»
The Flash season 8 episode «Lockdown» attempted to address an apparent plot hole regarding vigilante justice in the Arrowverse and revealed that Barry Allen has been repeating the same stupid mistake for years in how he handles criminals. However, the episode's core concept was complete nonsense within the context of earlier episodes of The Flash. It also made no sense compared to other Arrowverse series, which have also addressed the question of what legal authority superheroes have and what is required of them when they subdue a criminal.
The opening scene of The Flash season 8, episode 7, «Lockdown,» found the Fastest Man Alive bringing a carjacker, a mugger, and a robber to justice within the span of a minute, leaving them handcuffed in the lobby of the Central City Police Department. This did not please CCPD Captain Kristen Kramer, who later complained to Barry Allen about The Flash creating a lot of problems for the police. Specifically, by bringing lawbreakers in and running off without any explanation as to what crimes they had committed, The Flash made it harder for the police to convict those criminals as there was often no direct evidence of any criminal activity.
Related: The Flash: Every Change Nora & Bart Made To The Timeline
Kramer's complaint raised the question of how the criminal justice system works in the Arrowverse in regard to costumed vigilantes arresting people. Unfortunately, this point has already been explored in other Arrowverse series in far greater detail and with far more satisfying answers. The way in which The Flash season 8 addressed the issue only served to make the cast look foolish. This was doubly true of Barry Allen,
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