1 : to free from restraint, control, or the power of another; especially : to free from bondageWhat, then, was Charles Darwin if not humanity's great emancipator. He made it thinkable to break the heaviest chain of all. There is far too much beauty in the cosmos to be nihilistic over the fact that our responsibilities to each other, and to life on this planet, are of an entirely natural genesis. We're made of chemical stuff, and genes, and proteins... but think on what those molecules "do, given 4 billion years of time." (Sagan)
2 : to release from paternal care and responsibility and make sui juris
3 : to free from any controlling influence (as traditional mores or beliefs)
Anyway, it's a great song, and an inspired video. Enjoy.