Meaning:

抱不平 (bào bù píng) to feel angry about an injustice done to someone else

Usage:

“抱不平”是指看到别人遇见不公平事情，心里感到愤怒，并帮助弱小的一方。有时候也说“打抱不平”。

“抱不平”means feeling angry about an injustice done to someone else. Sometimes it is used with the verb“打”.

Examples:

1. 我们都为他抱不平，做了这么多事情还要被领导批评。

    Wǒmen dōu wèi tā bào bù píng, zuòle zhème duō shìqing hái yào bèi lǐngdǎo pīpíng

    We all feel angry that it is unfair to him。He was criticized buy his boss as he has done so much.

2. 这件事跟你有什么关系，你有什么好抱不平的。

    Zhè jiàn shì gēn nǐ yǒu shénme guānxi, nǐ yǒu shénme hǎo bào bù píng de

    It is none of your business and you need not to be angry.