Has anyone had any experience with removing aftermarket privacy film?

Recently I went to look at a car that had it on the rear windows and wondered whether this would be a nightmare to remove. 2009 Vogue TDV8 Nara Bronze
2002 Vogue V8 Zambezi Silver
1986 90 Pick up Deep Bronze Green
1978 Series III SWB Deep Bronze Green

many moons ago I had a bmw with the darkened rear windows it came of easily normally when its been done aftermarket its only put on with water then squezzed out with a spatula depends on how long its been on though but wont be too much of a problem

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"Open Mike Night " sounded like a lot of fun until i found out i was going to an Autopsy

As the video above, I used a wall paper steamer. Hold the steamer on the tint for a few minutes and it will start to lift off. I also used a Stanley blade to get the odd bits off. Let the windows dry off then use some tar and glue remover on some paper towel and the glue just wipes off.