Discord is balance between good and bad. Light and Dark. So whenever there's an imbalance, he must counteract that imbalance. What happens when the imbalance is a pony? And... he gives them a choice? Either he stays, or they both go to stone.
Running, it's all Chrysalis has ever done since she was born. Running from her emotions, from her heritage, from Celestia, and now she's on the run again, but this time is different. Twilight Sparkle doesn't give up so easily.
The lab team has done it. They've made the mane 6, complete with magic. Of course, science needs proof, so they record some tests. Cue the gun using mob out to kill them.
Vinyl Scratch was the foremost modern artist in all of Equestria, known for putting her heart and soul into her music. No one ever imagined how far she was willing to go.