Marriage is now legal for same sex couples in the wake of last week's historic Supreme Court decision. 

But how did we get here? 

Looking back at the battle over the right to marry, the welfare of children has played an important role, on both sides of the debate.  

The Washington Post's Sandhya Someshekhar covers social change for the paper and recently wrote about the role of kids in the marriage debate.

Click on the blue player above to hear the story.