Watch Katy Perry Give a Rousing Speech and Performance At Democratic National Convention

Katy Perry is a staunch Hillary Clinton supporter, and her allegiance to the Democratic party's nominee for president was clearly expressed on Thursday night. 

At the Democratic National Convention in Philadelphia, the singer gave a speech, introducing her background as the daughter of two conservative, Republican pastors, then proceeded to tear the house down with a performance of her songs "Rise" and "Roar."