The eponymous show Steven Universe which premiered in 2013 on Cartoon Network has won a special place in my heart not only because of it's colorful and playful animation style but because of the agenda that is is pushing. Steven Universe centers on the Crystal Gems, a group of intergalactic warriors who draw their powers from magical gem stones on their body. The show follows Steven, a half-human half-crystal gem boy, as he figures out how to use his powers and learns various life lessons along the way. Most superhero shows involve primarily a male superhero cast however Steven Universe exists in a world where all the super-powered beings are female, except for Steven of course. Showing that women can be just as, if not even more, bold and courageous as men. The show goes farther than just saying "women are strong, too." By making each Crystal Gem unique in body type, size, weight, height, and personality the show is tackling the issue of body image that many of its young female viewers deal with and teaching that there is no one way to look and be a superhero. This is a huge deal considering that females portrayed in the media typically lean toward unrealistic standards.
Above is one of my favorite clips of from Season 1, Episode 49 "Jail Break". Here we see the show pushing for an acceptance of homosexuality.