Despite howls for the Wall Street bankers, traders and executives whose dishonest deeds triggered the 2008 crisis to be held accountable, no one was brought to justice. Then the system found a victim.

In 2012, Abacus Federal Savings Bank became the only US financial institution to be indicted in the wake of the crisis. Manhattan District Attorney Cyrus Vance Jnr indicted Abacus and 19 of its former employees on 240 counts. It was alleged that they schemed to inflate the income and other qualifications of loan applicants, and falsified documents to obtain mortgages through the Federal National Mortgage Association, known as Fannie Mae.

The subsequent trial in 2015 was chronicled by filmmaker Steve James. Abacus: Small Enough to Jail will be shown on November 16 at the Asia Society Hong Kong Centre, followed by a Skype chat with Abacus founder Thomas Sung and his daughter Vera, a director of the bank.

Nine top banks sued by Fannie Mae over Libor fixing

“A lot of people don’t know the ending of the story. So when the jury goes into deliberation, you can feel a palpable anxiety. Audience members have told me they are on the edge of their seats not knowing what’s going to happen,” says James via Skype from Los Angeles.

Sung was determined to fight the charges, which he strongly believed were racially motivated. He was anxious to prove the bank followed correct protocols; it was argued in the trial that its default rate was only 0.3 per cent, much lower than the national average at the time of about 20 per cent.

Sung, originally an immigration lawyer, founded Abacus in 1984 after failing to find a bank that would lend him capital. His mission was to provide loans for immigrants in Chinatown. For 20 years he was CEO of the bank, which is now run by his second daughter Jill. Vera, the eldest, is a director.

“When we were young, my father said, ‘I want you to be a lawyer to understand your rights’,” says Jill. Jill Sung and three of her four sisters went on to train as lawyers; the fourth became a doctor. “I thought I was immune to the deep racism in this country, but … this case made me realise this fight is very much alive. It’s very important to maintain institutions like us, and how are we going to continue this fight? The politics in the US makes it hard to walk away,” she says.

Five reasons New York’s Chinatown is surviving gentrification scourge

Sung still feels strongly that Vance picked on the small bank in the hope that it would be shut down – for his own political gain.

“I wanted the documentary to be made because I didn’t know how the prosecutor might influence the jury. We knew we were right – we knew it was a bogus charge,” he says.

“This case threatened our community, not just the bank … We fought for the bank and represented the community.”

Ironically, the youngest of Sung’s daughters, Chanterelle, was working in the District Attorney’s office at the time of the indictment. She was so upset that her family’s reputation was at stake that she asked to be removed from the case, and later quit to help the family fight in court.

Following a 67-day trial, it took 10 days for the jury to find – spoiler alert – the bank not guilty of all 240 charges.

Since Abacus: Small Enough to Jail was released, other members of ethnic minority communities have approached the Sungs at screenings with their own tales of prejudice or false criminal accusations.

“The amount of support is beyond our expectations,” Sung says. “People say to us, ‘How can this be happening in a democratic country?’ This brings out the meaning of how much justice you can afford [the trial cost the Sungs US$10 million]. The poor are subjected to this insidious prejudice within the legal system. People have lost liberty and life.”

Jill says some people have popped in to the bank after watching the documentary. “We had one man visiting his son from Texas and he asked to speak with the Sung family, and I sat with him and we talked.”

US bank catering to Chinese-Americans acquitted of larceny, conspiracy

“It’s very humbling and emotional to meet people, strangers who come to say, ‘We’re sorry this happened to you’, and some are even in tears,” Vera adds.

The court case involving Abacus is still largely unknown, because there was scant coverage in the mainstream media. The only reports were about the indictment, with sensational photos of the 19 suspects handcuffed together like a chain gang, being paraded down a hallway.

That image shocked the Sungs, who quickly realised they were up against a District Attorney’s office that was keen to make a spectacle of their small bank, giving the impression that Chinese people were dishonest and questioning the bank’s integrity.

As the trial was about to start, Vera told a friend, producer Mark Mitten, about the case. Having known the family, and Vera personally for more than 10 years, he resolved that a documentary should be made to show their side of the story.

Mitten introduced the family to director James, who is best known for Hoop Dreams, The Interrupters and Life Itself. James tends to make documentaries that follow people at critical junctures in their lives. (Life Itself follows the last five months of film critic Roger Ebert’s life.) The story of how the Sungs dealt with the immense stress of the trial and what it meant for the Chinese community fitted the bill.

James says he is surprised by the positive ways in which people deal with situations. “The Sungs have incredible humour. No question, what they went through was traumatic and it took a toll on each family member, but they never lost their sense of humour, never lost their sense of closeness and belief in one another,” he says.

“My favourite scene is when Vera and Chanterelle are going over their father’s statement once the verdict came down, and he is trying to eat his chicken sandwich. They are alternatively bickering over the wording and asking him if his sandwich is OK.”

James says the documentary process not only follows the real-life narrative, but also seeks to understand the subjects’ feelings. “The way people deal with conflict doesn’t conform to expectations compared to fiction. We witness moments few writers of fiction can imagine.”

The fact that there was barely any coverage of the trial in the media illustrates the wider lack of reporting on ethnic minority communities, he says.

“American media consumers, who are mostly white, are not interested in other people. They aren’t interested in the world unless we are there at war,” James says. “People skip ethnic enclaves to read about the craziness in Washington. This story is an unequal application of justice and it continues unchallenged. People who are victims of the justice system are unknown, faceless people.”

Jill says the bank is now back on track and where it was before the indictment five years ago. After the racial prejudice they faced, she is determined to not only make Abacus relevant to first-generation immigrants, which was her father’s original vision, but to also serve second-generation Chinese like her and her sisters.

Of all the films he has made, James says Abacus: Small Enough to Jail has been one of his audiences’ favourites. “They are outraged over what the Sung family was put through, there’s humour – you can hear a lot of laughter in the cinema, and they fall in love with the family. They admire them and pull for them.”

Abacus: Small Enough to Jail, Nov 16, 7pm screening, Skype meeting at 8.35pm.

Asia Society Hong Kong Centre, 9 Justice Drive, Admiralty, asiasociety.org/hong-kong