The Purge films have increasingly explored the political subtext (well, less sub, more punching out text) of the idea fuelling them, and that's pushed even further with the third, subtitled Election Year. Check out the first trailer.
Continuing the thesis that a warped alternate America would hit on the idea of setting aside a 12-hour period once a year where its citizens could do what they like without worrying about the law, Election Year follows Charlene "Charlie" Roan (Elizabeth Mitchell), a United States senator whose family was slaughtered one Purge night, and who is running for president on the campaign pledge that she will end the tradition once and for all.
Naturally, those in power who rely on it to keep poorer folk occupied and/or killed, are none too happy about this, and plan to take her out during the next Purge period. Fortunately for Charlie, she'll have some robust help from Frank Grillo's Sergeant who, after his experiences with the event a few years ago (seen in 2014's Anarchy), is ready to step in and protect her. But that won't be easy when there's a traitor in their midst...
Sounding for all the world like a fake Donald Trump campaign video with its "Keep America Great" sloganeering (satire, laygennulmen), The Purge: Election Night will strike our cinemas in July.