Often, when people think about discrimination, they think about obviously hostile attacks. However, that is not the only way discrimination can be expressed. Awhile ago, someone on another forum asked about the racial discrimination others had witnessed. Most of the answers said a common thing: that a lot of the discrimination they witnessed or experienced was from people who claimed not to be racist and that the racist comments were often veiled as pseudoscience. "I'm not racist, but..." was said to be a commonly heard phrase. This kind of discrimination happens against other types of demographics as well.
A harmful thing about this kind of discrimination is that, because they present themselves as calm, rational people, others tend to let it slide. This enforces the idea that it is ok. Why do people let it slide? I'm not quite sure. After all, if they really were calm and rational, then calmly and rationally correcting them shouldn't be too much of a problem. Sometimes, I think it is because, if it doesn't refer to them, people are more willing to just roll with it. I find this kind of discrimination is often dismissed by others because it is "not that bad" or not that obvious. Personally, I don't understand that point of view, but I do understand that I have more experience seeing what happens when things that are "not that bad" are allowed.
I was talking with someone the other day who pointed out another thing. She once said accidentally something discriminatory because she was not informed about that issue. She is glad that someone did speak up, so she could be informed and learn from the experience. In cases like this, it isn't fair to the person saying the discriminatory words not to correct them. Personally, I think it's best to try in any case because we don't know unless we try right?
This may just be me, but I want to live in a world where there is no discrimination. I know that the world we live in far from that, but it's something I think is worth working towards even if it never happens completely. I'm no hardcore activist, but I do believe in setting an example. I also believe in standing up for others, not just myself. After all, we teach others how to treat us. I believe we may also teach others how to treat others. (Did that sentence make sense?)
(This is not intended as an attack or comment towards anyone. It's just something I've been mulling over in my head for a few months.)
Edit: typo