Enya的《How Can I Keep From Singing》的那个MV的画面反映的是什么意思？

《How Can I Keep From Singing》那个MV里有坦克、政治人物等等东西，虽然音乐风格与她其他的并无两样，但是《How Can I Keep From Singing》的画面却一反常态，并不是以往的唯美，而是那些东西。我想一定是想表达什么特殊的意思，请各位高人联系那首歌的时代背景说说。
谢谢了~~~~小弟感激不禁
要是说得好且对再加30分
我感觉呼吁和平的路子应该是对的，不过我还是建议同志们能不能来个有谱的说法。

我也不知道但是通过歌词，。但是我找到了歌词中文翻译，通过歌词我感觉可能跟希望和平还有战争有关！在这里你可以看看能不能找到你想要的答案！

My life goes on in endless song
above earth's lamentations,
I hear the real, though far-off hymn
that hails a new creation.

Through all the tumult and the strife
I hear it's music ringing,
It sounds an echo in my soul.
How can I keep from singing?

While though the tempest loudly roars,

I hear the truth, it liveth.
And though the darkness 'round me close,
songs in the night it giveth.
No storm can shake my inmost calm,
while to that rock I'm clinging.
Since love is lord of heaven and earth
how can I keep from singing?
When tyrants tremble in their fear
and hear their death knell ringing,
when friends rejoice both far and near
how can I keep from singing?

In prison cell and dungeon vile
our thoughts to them are winging,
when friends by shame are undefiled