Romulo Avelica-Gonzalez was taken into custody over a decade-old DUI.
"Whiteness is just something made up and used as a tool to preserve power."
The Spanish-language media company plans to merge news sites Fusion and The Root into Gizmodo Media Group.
The union election ends workers' prolonged battle for recognition at the digital news outfit.
Managers have tried to convince employees unionizing is against their interests.
Company executives have argued against unionization in meetings with staff.
The news outlet's executives plan to try to persuade employees not to unionize.
The news site is part of a growing trend of organizing within digital media.