Discrimination, Is the opposite of privilege.
With privilege we often take it for granted, and it goes un noticed. except when other in a less privileged position point it out to us.
Discrimination is the opposite it is something we notice happening to us and not others. Others cant see it, so we have to point it out to then instead.
I often see, the words "race is not sex" used when ever somebody uses a racial example to explain a similar situation regarding sex discrimination. But when one focuses on sex and or race, and take that into the equation it takes weight away from what discrimination is, which is treating somebody in a negative and hurtful way, because they are different to you I either one way or another or multiple ways.
The truth of it is, if it isn't happening to us we don't notice it. We become blind to it, and don't need to do anything about it for self preservation. The cause of the discrimination becomes the focus, a minority race only needs to combat racism to be happy. Once the racial issues are addressed no more discrimination no problem. And its the same with sexism too. Treating people different and negatively can go right down to hair colour, yes blonde and ginger.
When you get right down to it, the scale might be different, but the principle behind it is the same. From what I have seen and have gained from my own failings is, I've learned that when you just focus on what a person does instead of why a person does it, you will make a lot of mistakes. Even when you focus on why you will still make mistakes, but it is easier to spot wear you go wrong.
EDIT- A lot of the failing within religion is misinterpretation, people tend to focus on what the people in the stories do and not why. They also take every facet within these stories as truth. However time and time again in religious books it points out humanity can fail even as a religious nation. They speak of false preaching, misinterpretation and a lot of other things in there that are there to teach you to doubt religion and to make your own choices, because following in the footprints of another can lead you to fail unknowingly. However despite these teachings most churches claim to have it right this time and to not need to take that lesson. But thinking like this means they will continue to get it wrong and believe they are right, unless a prophet comes and spanks them.