Uganda is considering bringing in the death penalty for gay people. You can read about it in this New York Times article which was brought to my notice by Lee Wind.
It's bad enough denying gay people the right to marriage but this is an order of magnitude worse. We need as many people as possible to say so.
Lee has links to petitions you can sign. I'm not sure that they're open to non-US residents: you have to choose a US state as part of your address.
Whether or not we can sign those petitions we need to make our voices heard. It doesn't matter if you're gay or not. Living in a world where people are killed because of who they are isn't good for any of us.
Edited to add: The UK petition is here. Thanks to Old Kitty for the link.