Related Clues:

• Scrubbed, as a launch
• Impossible task for goon
• Can't be done, not on
• One giant turns out to be a denial
• Refutation by Antigone
• Area forbidden to certain groups, maybe police
• Entry to this area is forbidden (2-2)
• Area to which access is prevented, by paramilitaries, say
• The sort of area that will stop a goon getting confused
• No, for instance, inside the people
• For instance, among the people? On the contrary
• Scuttled
• Canceled ... or a hint to answering 17-, 27-, 34-, 45- and 57-Across
• Denial there's land outside, for instance
• 'Antigone' reading may be getting the thumbs-down