If one allows freedom, it will be while suppressing elements that try to oppose it.
They can argue that they're not being given the freedom to oppose it, but one knows that it is counter-intuitive, they're trying to destroy the very system that they're trying to obtain their excuse from.
In the same way, something which is counter-intuitive to democracy, it cannot be allowed. If radicalism and extremism are allowed to prevail under the guise of democracy, it will lead to an autocratic, or theocratic, system, and there will be no democracy.