What are existing social conditions that affect bullying? and how do they affect it?

Here are some existing social conditions that affect bullying and how they affect it :

- A social Conditions that a man should be physically strong, which cause the weak being bullied by the strong
- A social conditions that prevent someone from being different and unique, which isolated those who're seem as different
- A social conditions that stated that a girl has to be pretty, which caused the average looking seemed disposable and not important