This is the flag of the United American Workers Republic. It's ties in with the map I made called Red White and Blue, but Mostly Red. It comes from a world where Theodore Roosevelt was assassinated early into his presidency and never instigated any of his reforms. By the 1920s and 1930s socialist and communist movements had gained considerable traction. Thing came to ahead during the Great Depression, and before long an all-out Second Civil War had broken out. When the dust settled and the fighting stopped the United States of America had ceased to exist. It its place rose the United American Workers Republic. The new nation reformed American society along socialist and communist lines. It granted equal rights to all citizens regardless of race, gender, ethnicity and (in time) sexuality.
The UAWR fought against Nazi Germany and Imperial Japan during World War II. It was also a key figure in the founding of the Japanese Workers Republic, the Socialist Republic of South Korea and the People's Republic of Taiwan. It also supported socialist revolutions in Latin America, who retain strong diplomatic ties with their Tio Samuel. America also provided support for Iran during their socialist revolution in 1954. America took in several Jews to Alaska during World War II, so only two million were killed in the Holocaust. Besides the territory that the USA does in our world, the UAWR also includes the Philippines, Cuba, Panama and Liberia.
Traditionally, the United America Workers Republic has been in a Cold War against the Russian Empire and the Franco-British Union. In more recent times, however, the three superpowers are beginning to warm up to each other, and have become more like frenemies than outright hostile. On the whole the United American Workers Republic isn't necessarily better or worse than our America, but it is very different, and someone from our world might not feel very comfortable