Often anarchist movements are much more undemocratic than socialist parties, because they lack the democratic procedures to make majority decisions. Instead you get the ‘tyranny of structurelessness’ – where the best speakers (or the loudest!), those with the best informal clique links, are able to manipulate and dominate the movement.
Leadership has a way of always enterring into the equation wether you want it or not. The trick is of course to recognise that it will be there and find ways to make it accountable.