The Southern Poverty Law Center (SPLC) has been working to protect civil rights since 1971 and is a great organization to donate to. They monitor hate groups, have a “hate watch” page and a “hate map” where you can look up active hate groups in your area. They tracked hate incidents the 10 days after the election, which reached 867. With all of the white supremacist Trump supporters coming out of the woodwork, the SPLC will be very important in coming weeks and months.
The SPLC also sells these shirts that would be great to wear in the South.