| Be prepared to hit a blue wall of resistance. | เตรียมตัวเจอกับการ ไม่ให้ความร่วมมือได้เลย Brothers in Arms (2008) |
| blue wall of silence | (n) the secrecy of police officers who lie or look the other way to protect other police officers, Syn. blue wall, wall of silence, Example: the blue wall cracked when some officers refused to take part in the cover-up |