I feel like i have to cry to be taken seriously

I hide my emotions a lot; I fear vulnerability. When wrong is done against me, there will be no guilt. When I see others have the same wrongdoing made against them, and they actually show their being affected, the perpetrator's likely to apologise/stop/etc.
Is it normal that people don't seem to know that they are doing wrong, full stop? It doesn't matter whether my hurt is shown or not.

Hopefully this makes sense.