Slytherins are evil.
Gryffindors are perfect.
Ravenclaws just study.
Hufflepuffs are useless.

I think we have all established that those are all completely untrue. This is called "stereotyping" and it is BAD. It tosses groups of people together and sticks a label on the lot of them, no matter that they're not all exactly the same.

This happens all the time, whether it be stereotyping oleh house, skin colour, gender, atau blood "purity".

Think of it this way...

Purebloods have discriminated against muggleborns for centuries. It's something that has never changed and probably never will. All purebloods,...