How to explain with the right words? (English isn't my native language).
In the first years of the comic strip "Buck Rogers" the antagonists were the han, the red mongol invaders. That was right then, but today it wouldn't be politically correct. In the 70's there was a Disney comedy "Our dinosaur is missing", where Chinese are the antagonists. Today we can't watch it because it is not politically correct. Walt Disney was smoker, but not their photos are changed, the cigar in his hand has been censured. In a 60's comedy show maybe you could tell a joke about gays, but now it wouldn't be allowed. The mind of the people can change.
Your conscience can be clear but if you have said something offending others, you have to face the consequences.
If you really want to fight the hate and help for a better world, then you have to remember the key is recovering moral values like the respect of the human dignity. Without this the rebel can become a new tyrant, the hero can fall in the dark side of the force. Without respect of the human dignity reporting hate or intolerance will not be enough.
* An ordinary person with a sane mind should have enough empathy even for fictional characters. (Some people like horror movies, but because that fear helps us to remember we are really lucky because our life is enough boring, without danger or menaces). Trust nobody too much who enjoy with the suffering of other people, even fictional characters.
* If I want to play "Tale of the Loop" with children PCs, I want an adventure like R.L.Stine's Goosebumps stories, not Garth Ennis' "Crossed" comics.