Once upon a time there was the watchman; those posted as to sound the alarm or ring the bell or blow the horn on sighting or suspension of something or someone, a potential if not certain threat to the city, village and such. The watchman was placed or positioned on a wall, in a tower or at some other key spot and, depending on the times and advancements, possibly aided with optics or other devices to enhance/increase their abilities, and again, ensuring the earliest warning of impending danger.
Where is the watchman now; one who is or could be effectively the town crier—one as a trusted source, sworn to an allegiance to/or the people—not strictly the powers—and certainly not asleep or otherwise derelict in their duty to the folks, the population?
From the prophet Ezekiel, chapter 22:
I looked for someone among them who would build up the wall and stand before me in the gap on behalf of the land so I would not have to destroy it, but I found no one.
Much later, another prophet Micah, chapter 7:
The day of your watchman has come, the day God visits you.
Now is the time of their confusion.
Do not trust a neighbor. Put no confidence in a friend. Even with her who lies in your embrace—be careful of her words.
But as for me, I watch in hope for the Lord, I wait for God my savior; my God will hear me.