Can bloggers overthrow the government?

In Italy the other day there was such a phenomenon: a huge number of people gathered on the streets of Rome (according to various sources, from 90,000 to 350,000 ). The demonstration was held under the name “No Berlusconi Day” - including 700 buses and unscheduled trains from all over the country. This demonstration was intended to declare a public desire to displace the head of state, Silvio Berlusconi, who is convincingly enough accused of all mortal sins and who obviously got everyone. The demonstration participants were dressed in purple, as this color has no political bindings in Italy (not red, not orange, etc.).

The most interesting thing: this demonstration was organized not by political forces (not by parties, not by social movements or non-governmental organizations funded from abroad, not by the opposition), but by a certain community on Facebook .

What do you think: how is this possible in Russia and what is it fraught with ?