Reply #3: My congregation flies a rainbow flag too

[LiberalEsto]

and it has strongly supported the UU "Standing on the Side of Love" campaign for equal marriage rights.

Here's a link to the many social advocacy programs of the Unitarian Universalist Association:
http://www.uua.org/action/

Here's something from the UUA web site:
"Working for civil rights and combating oppression are essential parts of our spiritual journey. Our faith community has worked for justice for hundreds of years, from advocating for free speech and the free practice of religion as far back as the fifteen hundreds to helping to abolish slavery and supporting women’s rights beginning in the eighteen hundreds."