It is sad that these protestors do not understand the gravity, and negative image, it casts upon them to fly the flag of another country. They do their cause a great deal of harm, and certainly it does not foster sympathy for them.
I lived in SA my entire life until last August. Now I'm in a rural area of Pennsylvania; about 97% Anglo. These people have never much talked about latinos, and are fascinated when I talk about Mexican food, or the fact that I was literally in the minority in S. Texas; they really have no clue.
However, now, with the scenes they are witnessing on TV, they certainly have opinions. (those opinions are not positive ones)