Actually, why not have the flags of the many countries flying at the marches alongside the US flag? That right wing reaction against the Mexican flags is bogus. There is no reason why a person need give up their ethnic identity to become a US citizen. One of the great strengths of this nation is it's diversity.

Or shall we ban the flying of the Irish tricolor too (which were out in great abundance at the St Paul march, right alongside the Mexican flag).

This flag litmus test is just bogus. As were the xenophobic signs being carried by the anti-immigrant gathering of 50 or so people here on Saturday, claiming "English" to be "American". As if.