Other than her amazing vocal ability, Demi Lovato is known for using her celebrity status to help young women all over the world from bullying and attacking others whether it is face to face or via social media. Madison De La Garza, Demi Lovato’s half sister was sadly a target of horrible threats via Twitter all stemming from a video she posted on Vine.  Click the link below and check out what Demi Lovato had to say to those who made mean comments about her half sister.