Right Bedrock, the overturned milk can is a symbolic lingam, and the offerings to arouse Pasupatinath to protect his pashus, which may either starve to death or get smuggled to Bangladesh if their precious milk fails to find the right market. 6-strings, it is better to spill own pain and labor than to recklessly destroy public and private properties and causing discomfort to general masses (I hope here in the picture the protestors did not resort to chakkajam and mob violence). Regarding the wastage, the milk will help clean the road of its pollution while at the same time reclying vital nutrients to millions of small creatures like ants and bugs essential yet ignored part of our biodiversity. IN ecconomic view, milk as a perishable product would be more costlier to store than to throw away, and as economics principle sometime indicates wastage and discardment is not always loss. Here, as a symbolic gesture, the milk which even in normal conddition would have been milked from two sources one living and another inate (Dhara), must have been bestowed greater mercy by the second one. Hope, their protest raise atleast few eyebrows and concerned parties think about their plights. If not, atleast they could help generate this thread not a small achievments in itself.