What will be the next Social Justice movement?

So with gay marriage bans dropping like flies, it's only a matter of time before mainstream acceptance of gays is here to stay. Once it's rooted in basic human decency, it'll be time to move on, but who and what is left?



Anyone here want to place your bets on what the next big movement will be? Either for the rights of an until-now disenfranchised group, or even overturning a previously big, sweeping and unchallenged set of social mores? What do you think the next big movement in our society will be?