Well it depends on the country -- democratic societies with strong civil liberties like the US or the UK would be less receptive to preachers of violent revolution, but a country like, say, Russia (IOTL) or Brazil (at least the way it'll turn out TTL) would be more open to the idea of a violent Bakuninist revolution. On a global scale, TTL will see less communism of any stripe.
The rise of the Roman Republic, despite its evolution from revolutionary government to moderate mercantilist government, has definitely inspired radical movements across europe -- a coming chapter will return to France and Germany (where an alternate version of the Gotha Program will be proposed)