The main thing I’ve heard online is that it’s a pro-europe movement, particularly in support or rearming the EU, particularly in response to current US actions.

I was speaking to an Italian guy at the pub on the weekend and he said that’s totally wrong and it’s just protesting general government corruption. I don’t know if he’s more credible than the internet, being Italian is a big plus but being a man at the pub means it’s likely wrong. Maybe there are protests for both.