This doesn't occur before the formal operational stage.
According to Jean Piaget, a Swiss psychologist, every person goes through 4 developmental stages:
- sensorimotor : birth - 24 months
- preoperational: 24 months - age 7
- concrete operational: 7 - 14
- formal operational: adolescence - adulthood
Only when we reach the final stage of development can we put ourselves in somebody else's shoes and see things from their perspective, according to Piaget.
Industrialization has the potential to lead to cultural clashes and discrimination because it separates two very distinct forms of labor: factory and farm. This leads to price differentials and the ability of those in charge of the factories to only choose certain types (i.e. races) of people for the jobs available.
American Robin eats insects such as earthworms and caterpillars. Just this knowledge is enough to know that it's not a herbivore: but it could be a carnivore. however, it also happily eats fruits and berries: so yes, it's an omnivore.