Tolerance is a form of generosity and it is a form of wisdom. There is nothing anywhere in the Dharma [Buddhist scriptures] that should ever lead anyone to become intolerant. Our goal as Buddhists is to learn to accept all kinds of people and to help all kinds of people discover the wisdom of the teachings of Shakyamuni Buddha
According to Shakyamuni Buddha, it's normal for human beings to be anxious, because it's normal for human beings not to understand themselves. When you don't understand yourself, you're uncomfortable and scared. When you realize that you're anxious, Buddha's teaching is to practice being patient with it.