It's a modern-day Twilight Zone in which they take current things in technology and it's almost like a science-fiction horror. Some are pure fantasy based on current technology, but others touch on things that are current issues and debates. For instance, one episode dealt with a company like Facebook that was able to pull up a lot of information on a user faster than the police. Another looked at viral culture and how people's addiction made them miss things that are plainly in front of them. This movie looks like it does the same thing; like it's predecessor, The Purge, it take aspects of current society and turns it into a horror film. Those that miss that fact kind of prove the point this film in which it satirizes political division, yet they can't even see the satire, instead screaming about how bad it is.
It's like films that satirize racism in America, e.g., Bamboozled, C.S.A.: The Confederate States of America. People got it.