Did your Streaming Movie Change?

While I enjoy the convenience of digital streaming - be it Movies or Music - I am struck by the potential for some unknown hand to subtly change the scenes, sounds, dialog/vocals, or even "adjust the message".

Since I've purchased a digital copy only, I would not even be able to check to see if something did change.  Almost like a digital "gaslighting." 

Even if there is a physical, unmodified copy available, very few would be motivated to compare.  If it was truly subtle, it may be difficult to notice it.

I feel that this has been done recently - to a syndicated show in order to change the advertiser - and there being at least some discussion about it.  Unfortunately, I am not able to easily dig up anything on it.