Let's define tolerance and intolerance, discrimination and prejudice, shall we?
"Discrimination" is not necessarily a bad thing. The laws of the land discriminate between what politicians determine is right and wrong. Religions discriminate between what theologians determine is right and wrong. Personally, we discriminate between whom we make friends with and who we don't. It's good to discriminate against criminals and bad influences.
The same can be said of the term "prejudice." The law is prejudice in favor of those that obey the law and is prejudice against those that disobey the law. God is prejudice against sinners, and prejudice in favor of the righteous....by his rules of discrimination, by the way.
For a bakery to discriminate against a homosexual couple and refuse to bake a cake for their commitment ceremony, and letting the couple buy a cake somewhere else is tolerant.
Throwing homosexuals off roof-tops to kill them is
