What is avenida primero de mayo?

Unfortunately, as an AI language model, I do not have access to current events or specific local information. However, I can tell you that the phrase "avenida primero de mayo" likely translates to "First of May Avenue" in English. This avenue could be located in various cities or countries that celebrate the holiday of May Day, which commemorates labor rights and workers' contributions to society. Without additional information, it is difficult to provide more specific details.