The trick here is to think about the best answer in the light of the organisation applied to. Why has the employer decided to ask you this? It is likely that the current vacancy is with a large organisation, not-for-profit organisation or local authority which is looking for staff who will be aware of two things: first, that services need to be made available to the whole population and, second, that colleagues may need support and understanding too. Explain how you would aim to fulfil these requirements in that job both internally and externally.
Draw on past experience and think of practical steps that can be taken to achieve this, such as translations of documents into different languages or by using visual images that are representative of the client group.