Vargas said education is important, like knowing to ask for a judicial warrant. He said many organizations are working with business owners and employees to get them information about what to do if agents show up.

“It was due to their [owners] preparedness that they were able to protect their workers and protect their businesses [on Feb. 13],” said City Councilor Gabriela Coletta Zapata, who represents East Boston. “East Boston has a strong immigrant community, and protecting these businesses from ICE enforcement action requires that level of preparedness as well as community support.”

Coletta Zapata recently walked through the neighborhood handing out know-your-rights pamphlets with the city’s Office of Small Business and Mayor’s Office for Immigrant Advancement. Neighbors United for a Better East Boston, an advocacy group, recently went to 85 local restaurants, stores, salons and other businesses with know-your-rights information, with the support of another group, Maverick Landing Community Services.

For the employees and business owners recently visited by ICE, these efforts are essential.

“To be firm and serious and say ”No, I can’t give you this information. This is the law and it’s clear,” said Castañeda of El Jardin, when asked what he’d tell other business owners.

“Be informed and keep calm,” advised Zapata from El Cambio Latino. “Don’t be overcome by your nerves. The person who has information — education about their rights — has power.”