Splash is a twoday program aimed at high school students in the Boston and Cambridge area, although students come from all over! Classes in anything are taught by most people from the MIT community.
In the fall of 2013, I taught Mathematics and Social Justice, a twohour interactive class on mathematics and social justice. Slides are available ondemand.
My sources of inspiration for this class were:
 Professor David T. Kung, St. Mary's College of Maryland;
 Radical Math website;
 Sustainability Math website;
 The book How to lie with statistics by Darrell Huff.
Learning objectives:

Understand the difference between and relevance of relative versus absolute numbers.

Understand how graphs can be misleading.

Understand how basic statistics (arithmetic mean, mode and median) can be used to prove almost any point if someone is not critical of the given results.

Understand the difference between an increase and a rate of increase.

Understand the concept of the mean and variations from the mean.

Understand the need for control in experiments.

Understand the Gini coefficient (related to the area under the curve of the cumulative income distribution), how it measures income inequality, and how imperfect this measure is.

Overall, understand how mathematics is used in various social justice topics, sometimes for clear explanations, sometimes as a way to muddle facts.