From photos on the CA site there seems to be a lot more support in Italy than in the UK
I think there are a few reasons why it would seem that way.
- Low internet penetration. If you want to come together and make your voice heard in the UK, doing it from your sofa is all too easy. Less so here. Especially as you go up through the age groups.
-Culture of congregation to support and protest. Partly for historical reasons. Possibly also because while we get a similar annual rainfall, it tends to happen over far fewer days. So basically everybody seems to like going out to do stuff in small and large groups in an enthusiastic fashion.
-Political/religious hang over from a case that concluded in 2009. There is still a hankering to change the law that directed the outcomes of a high profile medical case.
-National pride. British (and other N. EU countries) have not exactly held back in terms of putting Italy down. Particularly the last 10 years. Italians are the first to be critical of the failings of its state, systems and culture. But like ostmother people don't like it much when outsiders join in and put the boot in. On this occasion Italy is portrayed as being poised to rush in and "save" a baby from a world renowned British hospital. There is a "not so better than us now are you? Stand back and we'll show you how to do things properly" feel-good factor in that.
-Povero piccolo bambino factor. While the stereotypical Italian love of teeny tinies does get over stated, there is generally a significant sentimentality about little ones.
So... that's probably what moves people more towards pavement stomping rather than frantically bashing on keyboard. But it doesn't necessarily mean that there is a huge ground swell of support that utterly dwarfs the strength of feeling in Britian.
I can't guarantee something won't be lit up blue for a Charlie in my large village/small town (though will be chucking in my twopennith worth if I get wind beforehand). Just this week there has been congregation and symbolic gestures for something far, far, far less sympathtic in nature. But my general impression is that for most people in my community (rural, stones throw from Milano) the case is something they have heard of, but it has not left any durable impression.