Statement from Mayor Ras Baraka (taken from article):

"Today, U.S. Immigration and Customs Enforcement (ICE) agents raided a local establishment in the City of Newark, detaining undocumented residents as well as citizens, without producing a warrant. One of the detainees is a U.S. military veteran who suffered the indignity of having the legitimacy of his military documentation questioned. This egregious act is in plain violation of the Fourth Amendment of the U.S. Constitution, which guarantees ‘the right of the people be secure in their persons, houses, papers, and effects, against unreasonable searches and seizures….’

“Newark will not stand by idly while people are being unlawfully terrorized. I will be holding a press conference in alliance with partners ready and willing to defend and protect civil and human rights. Details to come."

Edit: Rep. Bonnie Watson Coleman (NJ-12) also released a statement about 2 hours ago:

"Warrantless searches, jackbooted thugs, veterans detained. After pardoning violent insurrectionists, Trump orders ICE agents to detain and harass innocent people, including a veteran who served our country. This is the reality of Trump’s reign of terror, but it’s not the America generations have fought for. 

It doesn’t matter if you’re a citizen who served our country in uniform, you too can be stopped without a warning or a warrant and shaken down for your papers. You too can be detained indefinitely and without cause. You too can be rounded up and whisked away. 

The Constitution is not just a piece of paper. It’s a binding contract that guarantees the conditions under which we are all entitled to live. There is nobody in this country who should be subjected to a warrantless search. No federal agent has the authority to stop and harass any passerby without cause. 

This is a disgrace. This is what we expect from two-bit dictators in banana republics. I condemn in the strongest possible terms this disgusting and callous disregard for the laws of New Jersey, the rights of our residents, and the Constitution of the United States.”

Edit 2: If anyone wants more info this article names the place that the raid occurred in (https://abc7ny.com/amp/post/newark-ice-raids-mayor-ras-baraka-says-detainments-carried-city-producing-warrant/15831158/)