In HBO's TV adaptation of the Watchmen, during the pilot episode, the American flag hanging Angela Abraham and her neighbour's porch is really different (image below).
At first I assumed that the flag might be as such in the said Watchmen universe from the show. However later in the episode while Looking Glass is interrogating a suspect, another American flag is shown in the background, that is same as the real-world flag (image below).
Is there an in-universe explanation as to what the different American flag stands for?