'It's simple, we kill the Batman.' (Spoilers)
The episode Blind Spot featured a group of masked, Klansman-like vigilantes who spoke of upholding Southern values, but were in truth driven by hatred and resentment. Their leader was played by Adam West, an actor best known for his campy portrayal of Batman in the 1966 television series.
I know this was a decade earlier, and completely unrelated, but I must say that I for one found it very surrealistic to watch Cheyenne gun down a masked Adam West.