一竹篙打一船人
jat1 zuk1 gou1 daa2 jat1 syun4 jan4yī zhú gāo dǎ yī chuán rén
English
- a pole hits a boat of people, which means one holds onto someone's wrong and thinks the rest of others are the same
- to overgeneralise in assigning blame; to blame a whole group of people for the mistakes of a few
粵語 — Cantonese
- 以少數人嘅行為否定所屬嘅成個群體
Sources: cc-canto, rime-cantonese, words.hk