Native American protesters stand outside the Phoenix office of a retailer of "sexy Native American" costumes last year. For some ethnic and racial groups, Halloween has long been haunted by costumes that perpetuate stereotypes and instances of cultural appropriation. Terry Tang/AP hide caption

People look on at a celebration of Indigenous Peoples' Day in 2016 at Seattle's City Hall. Seattle began observing Indigenous Peoples' Day two years earlier to promote the well-being and growth of Seattle's Indigenous community. Elaine Thompson/AP hide caption

Kathleen O'Donnell, left, with her wife, Casey. Since 2014, the couple has lived in Billings, Mont., where there is no explicit law that protects LGBTQ people from discrimination in housing, employment or public accommodations. Courtesy of Kathleen O'Donnell hide caption

Rosa Gutierrez Lopez cooks for her children in a Maryland church offering to protect her from deportation. Shuran Huang for NPR hide caption

A general view at the grand opening of The Space, the new home of Mondays Dark on Jan, 5, 2017 in Las Vegas, Nevada. Denise Truscello/WireImage hide caption

Macrobdella mimicus, the first new species of medicinal leech discovered in over 40 years. The Smithsonian Institution hide caption

In Tigers Are Not Afraid, 11-year-old Estrella (Paola Lara) meets a gang of orphans led by a boy in a tiger mask. Shudder hide caption

"The filibuster has been used as a weapon to just have the Senate do nothing," former Senate Majority Leader Harry Reid, D-Nev., told NPR. Bill Clark/CQ-Roll Call hide caption