"Walk Em Down (Don't Kill Civilians)" is a song by American record producer Metro Boomin and Atlanta-based rapper 21 Savage featuring Canadian poet and singer Mustafa from the former's second studio album Heroes & Villains (2022).
Over "sinister"-sounding piano keys in his signature horrorcore style and an "icy, monotone delivery",[1][2] 21 Savage lyrically depicts gun and street violence[2][3] and his determination to retaliate against the opposition.
[4] Midway through, the production shifts to a piano-backed, choir-lined instrumental, over which Mustafa sings about the trauma and turmoil that occurs as a result of the violence.
Hamza Riaz of Mic Cheque considered it one of the "bone-chilling cuts" from Heroes & Villains, although also an example of which "When there is a new voice, they are shoehorned onto a disconnected strand of a track that would've benefited without it".
[4] Complex's Peter A. Berry regarded the hook (performed by 21 Savage) as "simple, yet symbolic enough to be anthemic".