I think of bigotry and hatred, small-mindedness and judgment, as opportunistic diseases: they find a weak host and move right on in. It doesn't make them any less deadly, any less devastating, or any less curable, but it does explain what, for me, would be inexplicable otherwise.
Compassion and education, experience and travel are our innoculations against such disease, and I fear the longer we wait to be exposed, the harder it is to, what, become immune to the easy outs that prejudice and dogma allow. The needle gets bigger, the sick bed more tempting, so to speak.
But, surely, it's never too late. All it takes is bravery on the part of one, and a compassionate hand to hold on the other.