There have been tons of politicians who were slow to accept equal rights when it meant changes in the established social order. Many eventually came around, admitted they were wrong, and were forgiven. But the ones who actively choose hate-mongering don't ever get a pass.
If you can show me how I can cling to that which is real to me, while teaching me a way into the larger society, then and only then will I drop my defenses and hostility, and I will sing your praises and help you to make the desert bear fruit.