If that is the case, then hanging them would have been justified.
I think there's a difference in poisoning wells and bridge burning. I don't think many people on either side would have a great deal of sympathy with poisoning water.
But I admire the bravery of Unionist bridge burners. That's just an expression of patriotism and loyalty to the Stars and Stripes.
Well, these acts I speak of were done BEFORE secession, by hardcore abolitionists. The City of Denton, TX was burned almost to the ground. There was no bridge burning that I know of. These people were of the same ilk as John Brown.