Despite initial reporting that the words were “deny,” “defend,” and “depose,” police clarified the following day that it was “delay” and not “defend” written on one of the casings.
“Three fired cartridge cases alongside three unfired cartridges were found at the scene. The words “delay”, “deny”, and “depose” were written on the cases. “Depose” was inscribed on a casing from a round fired into Thompson, while “delay” was marked on an unfired cartridge ejected as the shooter racked the pistol, possibly to clear a jam or intentionally discard the live round.”
“Three fired cartridge cases alongside three unfired cartridges were found at the scene. The words “delay”, “deny”, and “depose” were written on the cases. “Depose” was inscribed on a casing from a round fired into Thompson, while “delay” was marked on an unfired cartridge ejected as the shooter racked the pistol, possibly to clear a jam or intentionally discard the live round.”
https://en.m.wikipedia.org/wiki/Killing_of_Brian_Thompson