If you want to show these people kindness and compassion that's great, but don't expect, let alone tell, other people, especially those who are the actual victims of their hatred and bigotry, to do so as well. No one owes them shit, let alone the targets of their bigotry.
I'm all for reform and second chances. People are almost always the products of their environments and a victim of it to some degree in these cases, but once you actively victimize others you can't play that card anymore and you're no longer entitled to that second chance. If you're lucky you'll still get one and hopefully you have the sense to take it when offered, but no one is obligated to treat you with kindness and take a chance on you. You can't use you're own issues and problems as a shield to excuse treating other people as sub-human. You're still responsible for your choices and actions. What you say, support and take part in.