The attack comes as Wu prepared to defend the city's approach to immigration enforcement before Congress next week.

Donald Trump’s border czar has turned his anger over illegal immigration to Boston. He denigrated the police commissioner and suggested that the so-called sanctuary city is holding onto hardened criminals,

City faith leaders told Mayor Michelle Wu there’s a lot of “fear” in the community, at a time when President Trump’s border czar is vowing to bring “hell” to Boston and Wu is prepping for a Congressional grilling over the Hub’s sanctuary policies.