City Councilman Jumaane Williams took the stand at his civil disobedience trial Friday and said he blocked an ambulance carrying his friend who was just ordered deported because, “You got to do something.”

Immigration-rights activist Ravi Ragbir had just fainted after a routine check-in Jan. 11 with Immigration and Custom Enforcement and had asked for an ambulance.

“Your friend is in a van basically being kidnapped by the people who were supposed to make sure that stuff doesn’t happen,” Williams told jurors. “Something wrong is happening here.”

A group of supporters accompanied Ragbir, executive director of the New Sanctuary Coalition, to the check-in at 26 Federal Plaza over concerns that ICE had recently ramped up enforcement.

“He had no opportunity to say goodbye,” Williams said. “He had no opportunity to take care of affairs, and no one knew where he was going.”

Williams and other protesters stood in front of the ambulance bringing it to a standstill, as police tried to shove them onto the sidewalk.

“Shame on you! Shame on you!” Williams chants in video footage played at the trial before Judge Steven Statsinger.

Williams, who is seeking the Democratic nomination for lieutenant governor, is the only one of 18 people arrested during the January protest to take his case to trial. He put out a press release Friday to remind reporters he would be taking the stand.

On cross examination, he admitted he didn’t know that Ragbir had requested the ride to the hospital or whether there had been medical emergency.

“Would it change your decision if you knew he [Ragbir] had?” asked prosecutor Ryan Hayward.

“I don’t know,” replied Williams, wearing a beige suit with a “Stay Woke” pin.

Defense lawyer Rhiya Trivedi called the emergency vehicle an “ambulance turned deportation machine.”

The 17 other protesters arrested took dismissal deals with prosecutors.

Ragbir, who was granted a temporary stay of deportation after the demonstration, watched from the gallery with dozens of supporters.

The Trinidadian was convicted of wire fraud in 2000, triggering a 2006 deportation order, which he has been fighting for more than a decade.

Deliberations in the case begin Monday, and Williams faces up to a year in prison if convicted of the top count of obstructing governmental administration.