noun
bullying the weak; picking on someone weaker
Refers to the act of bullying or the concept of targeting those perceived as weaker. Can also refer to a person who bullies the weak.
弱いものいじめは絶対に許されない。
Bullying the weak is absolutely unforgivable.
彼は弱いものいじめをするような人間じゃない。
He's not the kind of person who picks on the weak.