"Linguistic disobedience" might be achieved in many ways: by speaking out of turn, by disrupting syntax and "meaning", and by offering comparisons between disparate things. It might be a case of the poem acting as "witness", a recording of what's normally "unseen", ignored or denied. It can be subtle -- using allusion and slight shifts from convention -- and it can be volatile -- from agitprop to rants.
An activist ecological poem might offer a glimpse of deep natural beauty that is nonetheless necessarily "disrupted" by the highly disturbing reality of species loss, deforestation or, say, the ecological implications of buying the latest flat-screen television technology. That beauty exists at all in a damaged world is to be celebrated, but our appreciation of it comes so often at a cost that we don't always register. We must be conscious of its vulnerability.-- from John Kinsella on Keeping poetry outside the comfort zone.