Methods of execution (spoiler)
The other residents of the block seemed to be killing or attempting to kill people by grabbing them to death.
First they did it to Aiden until someone got so bored watching it that they shot him, then they relentlessly tried it on the one with the weird Rasta accent, presumably succeeding off screen. What you seh blood
Can you kill someone by grabbing their shirts and tugging at their sleeves?