I chose to talk about opinions. I think it's very important that each one of us expresses their own opinion (and creates their opinion without it being based on what other people think) about things, as long as it doesn't hurt other people. Sometimes people ask me "don't you think you're too feminist?"
People say stuff without knowing what they're talking about, without doing any research, knowing if someone has actually done something that justifies their opinion and I find that absolutely wrong. You need arguments to talk to someone properly and fairly and when you try to stand for something without having at least base knowledge about it, you won't be able to express yourself properly and might offend someone, creating and unnecessary awkward situation.
So look things up before talking about what you don't know.