Monday was Columbus Day, a federal holiday since 1968 that officially recognizes Christopher Columbus’s “discovery” of the Americas. Next month, the nation celebrates Thanksgiving. For many Native Americans in this country, these are not days for celebration, but stark reminders of the bloodshed and oppression forced upon their ancestors by colonization. This week, we talk about the legacy of these atrocities, and how to follow Native Americans' calls for change in the present.