Because the evidence isn't conclusive doesn't mean there's no evidence. There is evidence though as yet no absolute proof.
Similarly, there isn't, as far as I know, absolute proof of evolution, though only a twat would say there's absolutely no evidence of it.
Because fascism can vary doesn't mean one can associate anything they don't like with it:
Wikipedia describes fascism as a drive to forge a "type of national unity, usually based on (but not limited to) ethnic, cultural, racial, religious attributes". At the moment there's just as much outrage that government allows for too much multiculturalism.