No, these guys have definitely seen the 1991 movie ‘Deadlock’ starring Rutger Hauer. And yes, male choral singing is present.
Video probably 2014-2016, Syria.
ISIL terrorists execute captives
Bus explosion in Voronezh
Terrorist attack in Istanbul
Indicative execution ISIS
Terrorist kamikazde blew up the mosque
Execution of Syrian soldiers in Palmyra
Too much hair gel
Consequences of detonation of an explosive device
Militants of Jabhat al-Nusra execute soldiers of the Syrian army