Madonna is speaking out against Britney Spears' nearly 13-year conservatorship. The reigning queen of pop posted a throwback photo of herself in a shirt that read "Britney Spears" to her Instagram stories with the caption: "Give this woman her life back. Slavery was abolished so long ago! Death to the greedy patriarchy that has been doing this to women for centuries. This is a violation of human rights! Britney we coming to get you out of jail!"