“Deafness is a disability of communication, just like paralysis is a disability of movement. Sign Language is not only the most productive medium of instruction for deaf learners, but it empowers and enables deaf people to fully develop personally and culturally. It is the only tool we have to fight against poverty, oppression, marginalization and inequality.” The full and practical recognition of sign language as the language of the Deaf is yet the single most critical factor hindering inclusion of the Deaf people into the Tanzanian society.