By Tamas Csonka in Budapest Tens of thousands of people joined a protest on March 15 called by an emerging figure of the Hungarian opposition, Peter Magyar, a former Fidesz insider, who announced the set-up of a new political force to topple the ruling Fidesz party. On the same day, Prime Minister Viktor Orban, in what may be one of the most radical speeches by Hungary’s radical rightwing leader in years, railed against the EU and called his opponents traitors. ‘If we want to retain Hungary’s freedom and sovereignty, we’ll have no other choice but to occupy Brussels,’ Orban said. The contrast …