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The reading for today, by Lincoln A. Mullen,  is an example of how the presentation of visual data in ways that the general public can easily understand and absorb is not only effective communication of information but also a way of making knowledge and history that would otherwise be ignored accessible to all. Some parts of the text explain how so many governmental offenses to the basic human rights of individuals are legalized simply because the law refuses to acknowledge them or because they are “invisible”.  I think data visualization is useful most especially in cases like these because by presenting such masses of data the public get to see and acknowledge what is being done and the scale at which it is done and then choose what to do with this knowledge. They could become part of the movement against it.