Have you ever been truly offended at a film?

I do have a problem with movies that have too much strong profanity. I can't help it. Such movies seem so mindless somehow even if they have serious content. And young people sit through them without batting an eyelid.

Apt Pupil (1998). In every aspect it's normal Hollywood movie based on Stephen King book (the book is much better) except for one disturbing scene with naked underage boys in the shower (!!). I remember thinking to myself "Why the fuck is this scene is necessary to the plot?", "What was the director thinking to himself?". It bothered me a lot.
It wasn't until years later that I heard rumors about the director and everything started to come together. I was also really angry at the parents who let the producers take advantage of their own children.

Edit: So I would say any movie that exploits children.

There have been a few times:

The Legend of the Titanic (1999) An animated film with talking animals that completely changes the detail of the sinking of the Titanic and gives it a happy ending.

Loqueesha (2019) A blatantly racist film that relies on stereotypes of black women and was written,directed by and starring a white man.

Candy (1968) A sexist and racist comedy about multiple horny, dirty old men who sexually assault and harass a teenage girl (played by a teenage girl). It feels exploitative and it makes light of the situation, trying to portray it in a comic way.

When history is significantly altered it annoys me, but can't say I'm offended.

I'm probably the least offended person on the planet - in the truest sense of the word, but if F bombs are constantly dropped then it really can take away from what I'm watching.

I recall when old Rose in Titanic was watching TV at the beginning and she said "God dammed" and I thought that was out of place - but it still didn't offend me.

I was having a conversation with someone who was offended by DaVinci Code. She kept spouting off to a couple of us about how it demeaned the Catholic Faith. Then she asked didn't anybody understand "the message" they were conveying. I said "Absolutely". She replied "At last someone understands what I'm talking about. How did you take it?"
Completely deadpan. I looked right at her and said, "I took it to be a work of fiction and no one with any intelligence takes it to reflect real life."

A few people started laughing and one guy standing there even spit out his drink. She turned red and stormed off without saying another word.

I didn't care for The Wolf of Wall Street (2013) because it glorified an aggressive fraudster and his profane, drug-fueled hedonistic lifestyle. Even though it depicts his arrest and time spent in prison, it's obvious his personality hasn't changed in the end; he merely tones things down a bit.

The fact that this is based on true events makes it even more offensive to me. How much more money did Jordan Belfort earn when he sold the rights to his memoirs? Bad behavior is being rewarded here.

Nope, never. But, I'm never triggered or offended by anything.

Now, I'm less interested in films that rely on swearing too much, instead of good writing. But it doesn't offend or bother me. They are for others to enjoy. Just not my bag, baby!

I don't think being offended for me. It's more of being repulsed! Two things I don't like in movies are child exploitation and animal cruelty.