It was not immediately known who was responsible for the banner.
It was an apparent reference to the August shooting death of Michael Brown in Ferguson, Mo.
A grand jury declined on Monday, Nov. 24, to indict Officer Darren Wilson in Brown's death after he testified he had a reasonable belief he needed to use deadly force to defend himself.
Protests continued in Ferguson and cities nationwide despite Wilson's decision to resign from the police force over the weekend.
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