Sentence:  Mr. Schlossberg's rant angered activists for immigrant rights, who said it reinforced stereotypes that Spanish speakers are not citizens. And they worried that it perpetuated fear within immigrant communities of <WSD>ICE</WSD>'s aggressive tactics to deport those who are undocumented. 
Meaning of the word marked with <WSD> tags:  (Immigration and Customs Enforcement)|gloss=law-enforcement agency of the United States Federal government