For ages "Fascism" has been used as pure insult, this attitude deprived it from meaning as calling one Fascist or SoB resumes to the same, doesn't exactly means he is indeed a fascist or his mother is a prostitute. Madeleine Albright lately wrote on this subject over the very same concern.

What IS Fascism on strict sense?

From the little Mussolini left behind him, we can establish that any ideology who wants to centralize full power at the State is a Fascist ideology, but little more can be establish beyond the burden of doubt to be or not fascist behavior or ideology, as we start to collide with other ideologies, such as communism, which, by such narrow definition, are fascists, or even worse extreme fascists, as the state controls absolutely everything on society.

So... how can we define and give it a meaning?