I only have to chose between defending people who are the way they are because of biology and between defending people who are as bigoted as they are because of theology. I rank biology over religious bigotry any day.
Tolerance can also be self-exterminating when you're up against forces that are generally more intolerant than average, like Islamists. Tolerance can therefore not be absolute. You can be against violence, even if you retain your right to self defence.
"We have the right not to tolerate the intolerant. We should tolerate even them whenever we can do so without running a great risk; but the risk may become so great that we cannot allow ourselves the luxury. Karl Popper, paraphrase by Richard Robinson, An Atheist's Values (page 215)In Norway, there's a Neo-Nazi/Neo-Pagan group called Vigrid. I tolerate them. It's because there are not one or two billions of these morons in the world. But if Vigrid is awarded 10 000NOK for writing their opinions in Aftenposten, then I will have to protest.