Another excellent installment in the purge universe.
As Joe notes, fleshing out the details and filling in the plot holes to explain how a seemingly mad concept can have wings.
I'm still good to not have an endless stream of people's brains bashed out in front of my face and the TV franchise is smart to keep that to a minimum and focus on the intriguing plot details and world parallels.
I particularly liked the fleshing out of how citizens feel about living in this world, and even how the purgers get into their mind set. Nothing is simple and nothing is black and white, just like in real life.
You can feel that the writers have put a lot of thought into this and its a great feeling to feel that you're being given someone's best effort to not only entertain but capture your imagination, and give you smarts to go along with thrills. so it's 4 for four this season.