oppressor

1. N-COUNT An oppressor is a person or group of people that is treating another person or group of people cruelly or unfairly. 壓迫者[oft with poss]

Lacking leadership, they could organize no defence against their oppressors. 沒有人領(lǐng)導(dǎo)，他們就無法組織起來反抗壓迫者。