as the first American television show to feature a scripted interracial kiss between characters (Capt. Kirk and Lt. Uhura), although the kiss was only mimed (obscured by the back of a character's head) and depicted as involuntary. There is however some dispute to this being the first interracial kiss of the series because the 1967 episode, "Space Seed" – introducing reoccurring villain Khan (Ricardo Montalbán) – has him seducing and kissing Lt. Marla McGivers (Madlyn Rhue) as part of his malicious machinations. "Let That Be Your Last Battlefield" presented a direct allegory about the irrationality and futility of racism. Anti-war themes appear in episodes such as "The Doomsday Machine", depicting a planet-destroying weapon as an analogy to nuclear weapons deployed under the principle of mutually assured destruction, and "A Taste of Armageddon" about a society which has "civilized" war to the point that they no longer see it as something to avoid. Episodes such as "The Apple", "Who Mourns for Adonais?", "The Mark of Gideon" and "The Return of the Archons" display subtle anti-religious (owing mainly to Roddenberry's own secular humanism) and anti-establishment themes. "Bread and Circuses" and "The Omega Glory" have themes that are more pro-Christian or patriotic. The show experienced network and/or sponsor interference, up to and including wholesale censorship of scripts and film footage. This was a regular occurrence in the 1960s and Star Trek suffered from its fair share of tampering. Scripts were routinely vetted and censored by the staff of NBC's Broadcast Standards Department, which copiously annotated every script with demands for cuts or changes (e.g. "Page 4: Please delete McCoy's expletive, 'Good Lord or "Page 43: Caution on the embrace; avoid open-mouthed kiss"). The series was noted for its sense of humor, such as Spock and McCoy's pointed, yet friendly, bickering. Certain episodes, such as "The Trouble with Tribbles", "I, Mudd" and "A Piece of the Action", were written and staged as comedies with dramatic elements. Most episodes were presented as action/adventure dramas, frequently including space battles or fist fights between the ship's crew and guest antagonists. Several episodes used the concept of planets developing parallel to Earth, allowing reuse of stock props, costumes and sets. "Bread and Circuses", "Miri" and "The Omega Glory" depict such worlds; "A Piece of the Action", "Patterns of Force" and "Plato's Stepchildren" are based on alien planets that have adopted period Earth cultures (Prohibition-era Chicago, Nazi Germany and