Teaching Tolerance provides a number of resources for, as the name says, teaching tolerance.
Here is some information about the current issue.
This issue of Teaching Tolerance magazine takes an in-depth look at how educators can use social media to teach social justice. It also explores the human side of the complex immigration debate and suggests ways for educators to defuse the issue in class discussions. Other topics include combating anti-Muslim bias, improving diversity in STEM classes, teaching about human trafficking and changing attitudes about bullies. (from Teaching Tolerance)