What do you think about me being middle-eastern, and only dating blonde white girls as an act of rebellion
That's different. Why do you see dating blonde white girls as an act of rebellion?
I find them ugly, but my parents say they won't accept them.
It is wrong to use people for your own means. You should reevaluate your life choices and question why you think this is a good idea.
WTF, I like making a point with them. I will continue dating them.
You shouldn't be using these girls just to upset your parents. Find someone you really like to date. You'll never be happy in a relationship unless you genuinely like who you are dating.