No, it isn’t the American Vanguard Corporation.
Rather, it’s a group briefly referenced in this Southern Poverty Law Center post. Our friend Brandon Smith saw the sheet today on Spring between 3rd and 4th and photographed it. The image appears here with his permission.
On Saturday morning, I saw one of these sheets stuck to David Thrasher’s alley art between Spring and Market. Briefly contemplating my traditional free speecherism, I removed it and deposited in the nearest dumpster. Even if racists and white supremacists weren’t repulsive, it remains that illegal signs are tantamount to garbage, so by definition, these sheets are garbage.
American Vanguard has a website, but I won’t link to it here.