Sum up Unitarian Universalism: There is no right or wrong answer. What is right for you may not be right for them, but neither of you are wrong.
Personally, I'm not sure how you can form an actual religion around the idea that all religions are right; it's more like a lifestyle than a religion.
But in any event, since if I get started on this I will keep talking about it all day, it really is sad that people will go into any church and open fire. I will pray that these people will, in their grief, turn to the real God and He will help them cope
~gretti