I knew the kids weren't messing around the first time I heard them sing -- a low, slow, foot-stomping dirge, part spiritual and part worksong:

They are digging us a hole.

They are digging us a hole.

Six feet underground,

Where our future will go.

We will lay down our bodies.

We will lay down our souls.

UPDATE 5:45 PM: The group of eight activists has been removed from TransCanada offices and taken to Westborough Police Station. Spokespeople for the group say they are unaware of the charges at this time. The group is mostly still chained together with one or two of the chains broken by the authorities.