So I sat parallel to a girl. She was black, but I didn't think that was important. People are people, y'know? There just happened to be an empty space there.
But she gave me a look when I sat. Like, a scanning look. I didn't think much of it.
I looked to the door because I thought I saw a friend enter. As the door was in her general direction she looked into my eyes, seeming slightly concerned. I sort of looked back at her trying to understand what she was doing.
She got up and asked me what the hell I was trying. I just sort of stared, confused, then she said I had no chance.
Being a complete idiot, I didn't say anything. She said she saw me look up her skirt, and that she wasn't going to let a "freaky white guy" take advantage of her. I responded with "What?" and tried to explain that I had no interest in her sexually. She turned this around to mean I wouldn't date someone with a different skin tone. Being in a public building, people were staring at me now. I was fucking horrified.
She continued on about how "people like you" think of nothing but sex and how as a "racial and sexual minority" she had to be constantly watching for any shady activity from my kind. I wasn't even entirely sure she was serious until another guy came up and asked her if she needed help. He was significantly larger than me. I was seriously convinced I was about to get beaten, at the very least.
I feel it likely would've happened if she hadn't yelled at him for thinking that she couldn't stand up for herself as a woman. At that point he must've caught on that she was being outrageous and tried helping me rationalize.
More people came to the girl's aid. Some decided she was being unreasonable, others stuck beside her. Everyone in the room was taking sides.

Eventually someone got a bloody nose and the mess started breaking up, but I started wondering what would've happened if people hadn't smartened about the whole thing.
Being all depressing and such, I also started wondering what it would've been like if she had accepted the guy's help and I had been left on one side. I've had experience with similar situations before, so I didn't have a very difficult time imagining.

I am a middle-class caucasian male with an average-sized body.
I have no prejudice against any race or skin colour. In fact, I'm taking a University class on the American Civil War and the impact of slavery and discrimination at the time.
I don't think of girls as inferior in the slightest. Honestly, I somewhat resent the fact that I was born male (Another Tale for Another Time).
Basically: I think people are people.

Yet, at times I feel like I have absolutely no voice BECAUSE of these things. When I say what I think, others interpret it as me exercising my power and social status due to my sex, skin, body, etc. Hell, I was recently also accused of being racist when I told someone I didn't really have separate skin tone headcanons for Homestuck chracters.

I understand that there are terrible people on Earth, and people who think they can take advantage of others. I also understand that said terrible people are commonly recorded as having qualities similar to my own. But that doesn't mean we are all allowed to turn our heads away from the abuse of people with these qualities. It doesn't matter what you are; when you feel like you're not allowed to have an opinion, sit in the same general area as someone, or even look at them because of factors like these outside of your control, that's a goddamn problem.

I'm not saying people shouldn't be cautious of others, or try to fight for what others may see as setbacks. I'm saying we all need to remember something: Even if it's less discussed, racism against white people is still racism. Sexism against males is still sexism. Hurting a thin person because of their body is still hurtful. Prejudice against straight people is still prejudice (Heterophobia?).

Please. Strive to live in a world with equal rights for everybody. Help free those who are oppressed. Look scornfully on the oppressors.

But remember that both sides of oppression can be experienced by anyone.