There is no such thing as a same sex wedding cake. There is no same sex flour, sugar or butter. If a company makes a wedding cake they are selling a wedding cake.
If all they want to do is sell to Christians then they can make every cake with a cross on it and no one will go there unless they want a cross on a wedding cake. If all they want is a standard cake with flowers or designs then its a standard cake and what they are doing is refusing service because of the people who want to buy it. And no, that's discrimination and its not allowed.
I cant really gove you an answer,but what I can give you is a way to a solution, that is you have to find the anglde that you relate to or peaks your interest. A good paper is one that people get drawn into because it reaches them ln some way.As for me WW11 to me, I think of the holocaust and the effect it had on the survivors, their families and those who stood by and did nothing until it was too late.