My grandma remarried to a man named “Bob.” When Bob passed away we discovered a box of kkk memorabilia that had belonged to his father. Not much, a few enamel pins, what I believe are the ropes/ties from a robe, and then notes/lists of attendees from their meetings. I believe all of this stuff dates back to the 30’s or 40’s. Bob had no surviving children of his own, and I am the oldest “grandchild” so my parents offered me this box.
I have no attachment to these items or what they represent, or even to Bob’s family. What can I do with this stuff?
You might get in touch with the Jim Crow Museum of Racist Memorabilia. The name makes it sound fairly horrifying, but they use their collections to teach against racism and the type of object seems very much up their alley.
The National Museum of African American History is a good place too. It's a Smithsonian Museum, it'll get a lot of traffic, and they have a lot on the time period this is from. The notes and list of attendees would also help visitors realize the Klan isn't an abstract hate group, it's made up of your bank teller, your hardware store owner, your mailman, etc. Normal folks.
Looks like they're not accepting new donations until February though.