When I was in Grade 10 or 11 (2009-2010) my class was shown a 2D animated film about people either wearing pig masks or they were pig people. It felt like a critique on capitalism or something? I think there was a post-apocalyptic setting? I remember the film was dark and uncomfortable. It felt very European. I also think the film was maybe 10-20 minutes long. I think I remember one scene where a group of pig people were on a subway/metro. There might have been another animal race that was in control of the pig people. The animation had a lot of shadow work and reminds me of The Maxxx in terms of art style or maybe animations from Pink Floyd's The Wall.

I think we watched this film for an English exam. I also went to high school in Canada. The tone was similar to Pencil Face which was another film we had to watch for an English Exam in High School.

Any ideas on what this film could be?