Subliminal messages in movies has been a touchy subject for years. It's a form of communication that is not accepted in our society, however many people believe we are subjected to it. And the thing is, we might be.
Subliminal messaging is basically a way of advertising. For example by showing you images in a movies for such a short time that you can't actually see it. According to some people your subconscious mind does receive these images. People often use a research from 1957 as proof of this theory. But the guy who did those tests admitted he faked the results.
Personally I think that Subliminal messages are completely useless. There hasn't been a single study (that wasn't faked I should add) that proved this theory right, it's still just a theory.
I honestly don't expect that more people watched 'The Little Mermaid' because someone made a tower look like a penis. And even if all these accusations are true, It's probably just some cartoon artist who think he's funny. Disney has often been criticized on showing sexual images in unlikely places, so small that no one will probably see it at first look.
So there's no need to lay awake tonight worrying wether or not the evil government is trying to brainwash you. I'm pretty sure they aren't. And even if it is true, you have a good excuse why you just got horny during that kids movie (my subliminal mind just got turned on by a image I didn't see!).