The right to drink in public was not originally included in our Constitution -- probably because our ale-swilling founding fathers never thought it would even be a problem. They thought their descendants would be cool, naturally.
But as time went on, The Man clamped down on our inherent, God-given freedom to drink a 40oz on the street, much to the detriment of America, at large. But some spots are immune to these Draconian open container laws. And these, are them.
You can pop bottles in the streets of Butte, as long as you don't do it between 2AM and 8AM. Which sucks, because that's supposedly when Butte really starts getting fun.