There is something allegorically macabre in the image of lawful society's two representatives laughing together over the murder of the People.

There is also a weird truth in the notion that Giorgio has killed Ramirez. Ramirez represents the naiive, slaivshly loyal People who will follow the rulers anywhere, like a "vagabond." By killing Nostromo (the true People), and preventing any real union between the People and the lawful society, Giorgio has killed that ideal of loyalty too.