Ha ha. I have never ever wondered what he said. No audio needed. The video speaks for itself.
That little clip is severely manipulated to deceive you.
It succeeded.
With a little effort on your part, you can find on youtube or elsewhere the original video which was clipped, chopped, cut, and photoshopped to produce that.
Mussolini did not look like a blithering buffoon. He looked like a ranting demagogue. Which he was.
Leftists chop up videos of Donald Trump the same way. Do they "speak for themselves"? Do they tell you all you need to know about Donald Trump?