Should all beliefs be tolerated?

[palou]

Salnax said:
I feel that all people should be respected, and all beliefs should be tolerated (though not necessarily respected), but that there should be no special protection of actions based on beliefs. Yes, there are foul beliefs that benefit nobody, but the people holding these beliefs should be respected enough to contain them. People always deserve the right to have their own stupid ideas, especially when they have little to no impact on others.

Should they however be aloud to spread the belief? That is how I would define not "tolerating" a belief. It does not mean to attack people, simply an attempt to kill off the belief itself, in the long run.