I want equal opportunity for myself
What do you want an equal opportunity to do?
I want to be considered for the promotion.
It's normal to want the same opportunities as other people at work. You should demand that you are given an equal chance at the promotion. If you feel like you're being treated unequally you should go to the HR department at work.
Equal opportunity is a shit argument that shouldn't be used by anyone.
I think all people think everyone should be treated fairly. Maybe the messaging has gotten lost over the years but there are real opportunities now. If you don't get it maybe the person who did was more qualified.