1. There is nothing racist about chanting USA during a time of war when celebrating victory. There were no racial pejoratives used, so there is no factual basis for claiming that it was racism. Had the hispanic team taken it as racism then they could have responded with even louder cheers for the USA instead.
2. This is not about race, since hispanics are primarily categorized as caucasian and you have to go back to extremist racists prior to WW2 to find any major racist advocates that categorized them as not caucasian. The racism here is all in the eye of the politically correct thought police who view things primarily through a prism of racial grouping.
A person should be viewed as an individual and not as a member of a racial group, and to do so is racism in and of itself.
3. No one has a racial claim to live here in the US. An ethnic Amerindian who was born and raised in France is not somehow more American with a stronger claim to live here than a second generation Franco-American who has lived nowhere else but the US and whose values and culture are that of the Americans they have grown up with. It is pure racism to assert that the ethnic Amerindian does have such a claim.
We who are born and raised in the US are NATIVE Americans and have every bit as much right to live here as anybody else.
4. The Texas Revolution was not about racism, but was about freedom. Santa Anna threw out the constitution of 1824 and set himself up with a new constitution written by his cronies that made him effectively a dictator. About half a dozen Mexican provinces rebelled against him, and Texas and Yucatan were the only ones who were successful.
http://en.wikipedia.org/​wiki/Texas_Revolution
Note the map that shows the provinces that rebelled.
Texas was not take from Mexico after the Mexican American war, and even if it were, it would make no difference as it is inhabited by predominately US citizens today, not citizens of Mexico.