Bob Marley - Redemption Songs

Old pirates, yes, they rob I
Sold I to the merchant ships
Minutes after they took I
From the bottomless pit
But my hand was made strong
By the hand of the almighty
We forward in this generation
Triumphantly
Won't you help to sing
These songs of freedom?
'Cause all I ever have
Redemption songs
Redemption songs
Emancipate yourselves from mental slavery
None but ourselves can free our minds
Have no fear for atomic energy
'Cause none of them can stop the time
How long shall they kill our prophets
While we stand aside and look? Ooh
Some say it's just a part of it
We've got to fullfil the book
Won't you help to sing
These songs of freedom?
'Cause all I ever have
Redemption songs
Redemption songs
Redemption songs
Emancipate yourselves from mental slavery
None but ourselves can free our mind
Woh, have no fear for atomic energy
'Cause none of them-a can-a stop-a the time
How long shall they kill our prophets
While we stand aside and look?
Yes, some say it's just a part of it
We've got to fullfill the book
Won't you help to sing
These songs of freedom?
'Cause all I ever had
Redemption songs
All I ever had
Redemption songs
These songs of freedom
Songs of freedom

What message did Bob Marley give through this song actually?
Answer : There are PEOPLE who exploit your believe with very big lie. THEY control your mind with this and make everything looks genuine.