In the attack last December, Nowak’s killer Vickrum Digwa, 23, lied to police, saying that Nowak had racially abused and assaulted him during a brief altercation in the street.
In police bodycam footage, Nowak is seen lying on the street saying “I’ve been stabbed” and “I can’t breathe” as he’s being handcuffed, while an officer responds “I don’t think you have, mate”.
Digwa was sentenced to life in prison on Monday.
Farage, whose party is leading in the polls, tried to draw parallels with the 2020 killing of George Floyd in the US, which sparked the Black Lives Matter movement, contrasting it with what he said had been a muted response to the Nowak death.
Floyd had said “I can’t breathe” as a police officer kneeled on his neck for several minutes.
At a protest on Tuesday evening, hundreds of people waved flags and held up signs saying “Henry Nowak”, “Unite the Kingdom” and “I Can’t Breathe”.
Mahmood called the violence that later followed, when objects were hurled at police, “disgraceful”, and said those responsible would face the full force of the law. Two arrests were made, one for assaulting an officer.