A few years ago a read a good article about how sexism, homophobia, and racism is everywhere, is happening every day all around you. It pointed out that simply

A few years ago a read a good article about how sexism, homophobia, and racism is everywhere, is happening every day all around you. It pointed out that simply being aware and then saying something when you observe bad behaviour is helping but also will make you more aware of how often it happens. This was life-changing. I now simply say "That was inappropriate" when somebody says something discriminatory or "This is inappropriate" when there is something on going. I'm not an SJW, I don't make a big deal of it and I don't give speeches, I say the phrase and move on. But it's simple and powerful and, frankly a little depressing, because at some point you're saying it pretty often and realizing that, as a white guy, I don't have to deal with this crap. I was also kind of depressing to realize how much I had been marginalizing both the amount and impact of this behaviour that hasn't directed at me.