Fairly good article explaining why Katy Perry sing-talking while holding a slice of watermelon between her long manicured fingernails and her hair up in a twist braid might — just might — be problematic. Backed up with a lot of evidence and a clear, clean writing style.
But I mean really... where's our White History Month, you guys? Where is it? The Magnited States of America is already completely non-racist, so just stop.