I remember watching a drone video during the height of the immigrant influx to Europe in 2015. The scenes were absurd. With the huge masses of people on the move, it resembled a film of some kind. At one point, I thought it looked vaguely like a zombie movie.
Then the thought occurred to me: If this is a zombie movie, who are the zombies here? We, or the migrants?
While not being a huge fan of the genre, I have seen a couple of zombie movies. Zombies are often portrayed as creatures with very limited remaining functioning brain capacity. Basically, they move around aimlessly and make incoherent sounds. Apart from a desire to feed, they have no clearly discernible goals.