[mnehring]

That is actually a myth, Cinco de Mayo isn't Mexican Independence Day (that is September 15th) Cinco de May is a celebration of when 4000 Mexican troops kicked the entire French Army out of Mexico (and subsequently, that led to them being kicked out of all of Central and South America as well as what would be the US Southwest)

America actually supported Mexico in this and helped arm the Mexican Army. This isn't why we celebrate Cinco de Mayo here though, we celebrate it because US Beer companies saw a great marketing option, but technically, this could be viewed as a US holiday as well as a Mexican holiday.

[TheForceOfOne]

Do they celebrate our 4th or July holiday?

[mnehring]

..and as a side note to this, the victory at Cinco de Mayo helped prevent Napoleon III from supplying the Confederate army, and thus, helped us in the Civil War.