They have no mind of their own and just mindlessly/ instinctively follow the longest queue, blindly assuming it to be the best option.
Even monkeys can speak against injustice:
Two Monkeys Were Paid Unequally: Excerpt from Frans de Waal's TED Talk
Published on Apr 4, 2013
What happens when you pay two monkeys unequally? Watch what happens.
An excerpt from the TED Talk: "Frans de Waal: Moral behavior in animals." Watch the whole talk here:
And dogs will protest against ill treatment.
But Singaporeans :
But IQ is certainly not zero, probably bird brain level is about right.