I like that song, but I am somewhat perplexed by the 'translation'!
Here's a straight translation by eul, with a few notes to explain ...
Rough the wind in the clear day’s dawning
Blows the clouds helter-skelter over the bay,
But there’s more than a rough wind blowing
Through the Great Glen* of the world today.
It’s a thought that will make our rats
– All those rogues that go arrogant, fresh and gay –
Take the road, and seek other bits of land
For their dirty tricks, to sport and play
No more will the fine young men
March to war when our boasters cruelly crow,
Nor little babes from pit-heads and hamlets
Mourn the ships sailing down the Broomielaw*.
Broken families in lands we’ve wasted,
Will curse Scotland the Brave* no more, no more;
Black and white, one to another married,
Make the vile barracks of their masters bare.
So come all you at home with Freedom,
Never heed what the hooded crows* croak for doom.
In your house all the children of Adam
Can find bread, whisky and a painted room.
When MacLean* meets with his friends in Springburn
All the roses and wild cherries will turn to bloom,
And a black boy from beyond Nyanga*
Throws* the fell gallows of the burghers* down.
The tune is 'The Bloody Fields of Flanders',
a march based on a traditional Perthshire tune,
by Pipe Major John McLellan, re-adapted by Hamish Henderson
for his lyrics.
*The Great Glen is the fault that cuts across the Scottish Highlands
from Inverness to Fort William, contains Loch Ness, but here a metaphor.
* Broomielaw: the embankment, now a roadway, on the north side of the Clyde,
passed by ships sailing from the docks.
* Scotland the Brave: best-known of all pipe marches,
but here a symbol for the country.
*hoodies: hooded crows, birds of ill omen
* John Maclean 1879-1923: schoolteacher and revolutionary socialist
of the Red Clydeside era.
* Springburn: working-class area of Glasgow,
one-time hotbed of left-wing activity.
* Nyanga: Black township in Cape Town
* Dings ... doon: echoes the marching song
of James V's force attacking the Douglas stronghold in 1528,
'Ding doon Tantalloun!'