The ethnic group Dan-min ("Boat Dwellers") was relegated as a outcaste in the Hongwu Reign of the Min Dynasty.Thereafter, Dan-min was discriminated for a very long time.
Latin American banana growers claimed that EU import tariffs designed to protect farmers in former European colonies in the West Indies and Africa unfairly discriminated against their products.
The point of such experiments is that an animal's ability to discriminate between different kinds of art is a plausible proxy for how complex and sophisticated its vision is.
Now, we would run the reciprocal experiments where we would inoculate a host plant with good and bad fungi, and they were also good at discriminating between these trade partners.
Pesticides may not discriminate between the insects they kill though one neonicotinoid maker says the chemicals risk to bees is lower when it's used properly.
If the participants thought they were discriminated against based on weight, as opposed to age, gender, or race, the researchers counted it as perceived weight discrimination.