Or gender neutral: desaliñade. Not exactly a social change related term - other than that social change folks may tend to be (though certainly not the folks in this picture). Also not sure if this use if particular to Colombia? I was reminded of this term, and given the translation, by the great compas at Pirate Wire Services, which I highly recommend. Check out their inspiring story this week on a gang truce in Colombia (that the picture is from) and subscribe! You can subscribe for free though donations help them keep doing this good work.