I presume you are talking about adsense ads..login to your adsense account..click on adsense setup..there you would find competitive ad filter..click on it and add url of ads which you don't want to be shown in your pages...Caution : Don't click on ads of your pages to find url..
I suggest that if Adsense is just very minimal part of your income, then do not use it on your site because more likely than not, Adsense ads would show something relevant to your site thus it is likely that they are you competition, however if you still want to put adsense on your site, then follow the advice of "pisean282311".
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.