njema
means shackles, handcuffs, or intangible mental shackles—you can think of this along the lines of mental slavery, social engineering, propaganda, you name it.
Note: The most notable use of the word njema is by Wallace Chirumiko (aka Winky D) a Zimdancehall artist who titled his studio album Njema and carries a social theme of being free from turmoil, redemption from mental slavery, etc.
Example usage: