[stcredzero]

You can't have a stable multicultural situation where a part of the population can make multiculturalism impossible. Yes, you must have rule of law. You must also promulgate the ideology of multicultural tolerance itself. You cannot tolerate a certain level of intolerance.

[Volpe]

Yes you can. The United states are my go to example for this as well. There are a number of White Supremacist groups in the US, which (mostly due to rule of law) are contained from ruining multiculturalism as whole (they probably have significant local effect). But they still are free to hold their beliefs and practice them (amongst themselves).