Critical pedagogy

So I’ve been reading about critical pedagogy for a class. For the most part critical pedagogy encourages students to challenge domination, and creates assignments that allow students to build critical consciousness. Of course some professors implementing this type of teaching pedagogy are not critically aware of their position, and what they’re pushing students to do by selecting the overarching theory they believe will create critical pedagogues. What is especially troubling is examples of use of critical pedagogy are most often from urban schools where teachers encourage and privilege the use of hip hop and poetry slams to expose students to the use of their own voice. Reaching out to a student through a communication method they’re familiar with is useful, but at what point is teaching teachers to reach out in this way just another way dominant culture is co-opting expression on the margins?