All tagged meaning of broad shouldered beasts

What does "Broad-Shouldered Beasts" by Mumford & Sons mean?

I try to keep my own personality out of my song explanation posts as much as possible, and I tried to stay objective and unbiased for this song, but I love "Broad-Shouldered Beasts" so much that I've got to say something about it. It's the seventh song on Wilder Mind, and other than "Believe," it's the only song on the album that's filled my eyes with tears. It's beautiful and sweet and calming and reassuring. The love demonstrated in this song is the purest I've seen so far in this album, and it's wonderful. You've got to listen to it for yourself.