Cons say that socialism leads to communism, by the same token does capitalism lead to fascism?

Honestly, no. Capitalism is its own self eating machine, that as Karl Marx wrote in Das Kapital, would lead to socialism. Fascism is more of a right-wing ideology, and you can see traces of it amongst conservatives.

Things like anti-immigration, racial bigotry, and warmongering, is typical of both Conservative and fascist rhetoric.

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.