They are like cattle, but worse....

Surah 7 Verses 177-179

I have heard this of my colleagues who take flying lessons. If you are landing in a field of cows, do not expect the cows to move just because they see the plane. They will just stand there! They see it coming, hear it coming but do nothing.

I suppose people are worse, as they have the capacity to understand. Cattle in this context can also mean sheep.