A Northwestern University Mexican student group finds “eating tacos and drinking tequila” to celebrate Cinco de Mayo racially offensive, and wants to see the practice come to an end. In a letter to the university’s paper, the Latin student group Alianza called for a “respectful” celebration to commemorate “the Battles of Puebla, in which a vastly outnumbered, under-equipped Mexican army twice defeated the well-armed, well-trained French army, which had not lost a battle in over fifty years.” This is not unlike a uniquely American holiday, which commemorates the moment when 56 men affixed their signatures upon the Declaration of Independence...