Video from Mexico shows what I was told were members of CJNG (Cártel de Jalisco Nueva Generación) executing a captured man by beheading. The head chopper used a large, but dull machete, so it was mostly blunt force of the blows, rather than the edge of the blade, that decapitated the victim.
The chief chopper wore a shirt tucked in the pants, which accentuated his manboobs, and had skimask on his face. He tossed the severed head on a pile of logs which look like they were set up for a bonfire.
The CJNG member is the one being beheaded. The killers are from La Familia Michoacana. My apologies for the incorrect information I initially got.
Props to Best Gore member @natural-selection-2 for the video: