On Monday, at a formal ceremony in the city council’s hall, Mayor Inés Rey described the migrants’ actions as “pure heroism”.
Footage of that night showed other bystanders watching on, some filming on mobiles, and the two being the only ones who intervened.
“That two undocumented migrants were the only ones who physically risked themselves to help the victim of a pack thirsting for horror leaves much food for thought and a series of lessons,” Mayor Rey said.
“Thank you for your example in risking everything despite having a lot to lose,” said another councillor, Rosalía López,on Instagram in a post sharing videos of the ceremony.
Mr Diack and Mr N’Diaye had been living in the city without papers at the time and doing irregular work, putting them at risk of arrest and deportation if they came into contact with authorities.
But both men on Monday said they had just done what they thought was the right thing in trying to stop the violence. In front of a crowd of attendees at the council hall on Monday, they were handed plaques by the mayor bestowing them with the status of “Adopted Sons of A Coruña”.
“We are not heroes, we did what we had to do,” said Mr N’Diaye, according to an AFP report.
Mr Diack said: “I was born in a family that doesn’t have much… but they gave me many things more valuable than money. They gave me respect, education and above all, values.”
The two were also crucial witnesses in the trial of Mr Luiz’s killers last November, Spanish media reported.
A jury found four men guilty of the murder, with the court ordering sentences between 10 and 24 years. The court found the main accused – given a 24-year sentence – had shouted homophobic insults during the attack.
Tens of thousands of migrants reach Spain illegally every year through boat crossings across the Atlantic – with the most common arrivals from Mali, Senegal and Morocco.