He said: 'We have met with a wall of silence over this business.
The forests about them formed a wall of dark silence.
A wall of silence has now descended over the key players.
"I think this blue wall of silence should really be broken," she said.
Other officers said the so-called blue wall of silence is not what it once was.
The word had punched a small hole in the other's wall of silence.
We must break down the wall of silence around this.
"By becoming a public figure, I've been able to break through that wall of silence."
This time you will not take refuge behind a wall of silence.
He took on the blue wall of silence by himself.