What we want to believe

Every individual wants to believe that he or she is doing right
And we want to believe what we believe in is the most righteous thing.
But then in an open society its that we agree to disagree and
still remain in good terms and not kill each other.

Also its easy to make an open society go down the closed way if we tend to protect our ideas without allowing dissent.

An open society has to have checks, balances and protections of individuals even when they are against the openness of the system.
For example people who are against religious tolerance etc...should be allowed to express their views, though you wish they would go to Saudi Arabia, but shutting their mouth makes it as bad
as being in Saudi Arabia !

As a Japanese philosopher said:

Freedom allows those who are against it
But not vice versa.