The excuses I've heard people make for the police is that they didn't have the full story, they had to react quickly to what they thought was a case of a drunk young man who had racially abused someone. But even then, why were they so hostile to Henry and deferential to Digwa?
When Henry was lying on the ground, dying, the officer ordered, "Put the hand in the cuff, mate." Even if he believed Henry was just drunkenly lying about being stabbed, how could that officer fail to see that he clearly wasn't resisting arrest and simply couldn't move?
And then when the female officer asks Henry where he thinks he's been stabbed, a male voice (presumably Digwa or his brother) says, "He hasn't been stabbed." She says, "Oh no, but we have to check, don't we?" She sounds almost apologetic. Apologetic about examining someone who's lying on the ground claiming to have been stabbed.
The male officer tells Henry he's under arrest as he's lying on the ground, not moving. Then he actually shoos the female officer away while she's taking a closer look at him.
And then when they realised Henry had indeed been stabbed, they didn't even handcuff him when they arrested them. Apparently they even offered him refreshments when he got to the police station.
Why did the police treat the two men so differently? I'm glad Digwa is in prison, but I hope the officers face some consequences for the part they played as well.