If Yahoo does not like what you are saying based on who they support or their agendas they will give you this error no matter what you type. So much for freedom of speech. That is also why if you speak out on sometheing you only get a couple thumbs up or just one.
The manipulate that also.
While I do not know what caused the problem in the first place, I agree with the comment that clearing cookies and cache makes it go away. In Chrome go to Tools, Clear browsing data. I can now post again to Yahoo.
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.