First off I'd like to address the audio issue, whoever mastered this needs to learn that when something is only 20ft away is doesn't need a second worth of reverb this caused pretty much any noise off screen to sound incredibly awful. This is something that shouldn't be a problem even in a low budget film it would've been better off with no processing.
As for the zombie scenes I was actually surprised at the quality of makeup and acting during these scenes, some of the effects were noticeably low budget but overall quite impressive for what they had to work with, there was a lot of camera cuts which seemed a little over done.
In the political sense it addressed several issues touching on homosexuality, religion, mayoral office, and the middle east. it did seem to overemphasize them but perhaps that was the point. I only had a problem with how they were trying to make a point it detracted from the flow of the movie, there would be one scene where they're fighting zombies and then the entire mood changes to make political point it seemed like the writer wrote a political movie then an editor came along and said what do you think of adding zombies. The scenes didn't mesh together and felt forced.
The cast seemed a good fit for the characters they played, however the acting was definitely B-film quality I'd say the gay couple and the Iranian girl were by far the best actors/actress of the film. The Iranian father's actions and lines seemed rehearsed and forced. The zombies seemed as you would imagine from most zombie movies slow, stupid and bloodthirsty.
In conclusion a Zombies of Mass Destruction is a zombie film crashed into a political movie and didn't have any insurance to fund the collision repair, which makes for decent zombie killing action mixed with b-c class acting and interruptions of over-exaggerated political views, when I say interruptions I mean it takes on the mood of an entirely different movie.