This video of a Mormon woman speaking out for marriage equality is absolutely an example of a religious person acting on her beliefs, taking a stand, and doing the right thing. It was posted on Valentine's Day. She explains:

I put this video on during the Prop 8 debate. At the time, speaking out via this video threatened my temple recommend and calling, and I chose to take it down to protect my standing in the church. I regret that decision and put it back up as a tribute to the legend of Valentine

You should watch it: