Singable English version (created by me) as follows:
When you all considered our weakness, you made laws that bound our hands in chain! But we've broken free from our shackles cold, and we'll fight to see the light of day again!
When you all considered our weakness, you refused to give us food! And we all can see the bread that we were promised, but you give us loaves depending on your mood!
[Refrain] When you think of our bid for freedom, and decide to barricade the door, know that we fear evil more than death itself, and have sworn to leave that life forevermore.
When you all considered our weakness, you kicked us out onto the street! And you said to us that there were people living there, but we can clearly see that they're empty.
When you all considered our weakness, you kicked us out into the cold! We've decided now to build our own bonfire, and to warm ourselves before we all grow old.
When you all considered our weakness, you promised to provide us with good pay! But all that time you lied and stole from our pockets, and you hid all of our hard-earned coin away.
When you all considered our weakness, you ruled us with an iron hand! But our bonfire's grown too hot for even iron, and the masses will once more control their land.
[2nd Refrain] When you point the rumbling cannons at us, and you fire them to start anew, It would do you good to know: it's worth our while To turn those cannons onto you!