Disturbing/discouraging video about Islam.

[Mudhammam]

Well yeah, exactly. But dogmatic religion isn't like that. If a religion is dogmatic, it is right or it is wrong. There is no room for change. If you are open to change, you must admit the foundation of your religion is not infallible. If that's the case, why the dogma? Why not embrace something more flexible like Secular Humanism which acknowledges the changing, advancing state of knowledge and enlightenment?

That is very true about dogmatic teachings not changing. 

"Death Penalty = moral" was never a dogmatic Catholic teaching, but a practice of the time... though an awful and embarrassing one. But you are correct. Church dogmas don't change, and neither will they ever. A couple examples of these are the belief that Jesus is God, and the belief that Mary got pregnant with Jesus through the Holy Spirit. We believe them to be absolute truths, and truths don't change.

Indeed. It certainly would be awkward for an institution to officially adopt a practice through which its founders were made victims, or as Tertullian put it (before he left the Catholic church), "the blood of martyrs is the seed of the church."