I finished the first chapter of The Revolution: A Field Manual for Changing your World, and I wanted to share with you the best paragraphs from it (in my humble opinion).

When we know that nearly 150 children die every hour in Africa from complications surrounding lack of clean water and proper sanitation, and we do not feel the same sense of urgency that we feel when American children begin to die from lack of clean water, we must look at the reasons why. Do we have a hierarchy of life based on the principles of patriotism, or are we provoked by the mandates of Jesus Christ?
These stories are not simply tragic. They are the stories of real injustice. A tragedy would be something that we are helpless to stop. This is injustice because we have the ability to help Africans gain access to clean water. Nearly 80 percent of all deaths in developing countries, more than twenty thousand deaths per day, could be prevented. Information regarding the lack of clean water and proper sanitation shows that it is the poorest and most vulnerable parts of society that have to go without.

(italics and bold are mine)

If you want to read the whole chapter you can do so here.