These people are demonstrating because they know "others" who have entered this country illegally and they don't want Arizona or the Federal Government to enforce current existing immigration laws.
They have an attitude like American citizens have treated them wrong. For decades the illegal immigrant has had it pretty good. Everyone looked the other way and let illegal immigrants utilize public services and work illegally off the books not paying taxes. The result was 15 million new illegal immigrants living in America supported by the American taxpayer. Hell a citizen can't go to a hospital ER without waiting hours because of all the illegal immigrants getting free health care. Some hospitals are going out of business and will reopen as a private health clinic that cannot be forced to take illegal immigrants for free.
How boycotting the all star game accomplishes anything except to make legal citizens more pissed off at illegal immigrants, surprises me. Not only are they here illegally but they act as if they are mistreated, and they are owed something.
I personally would like law enforcement to check identities of protesters. But that's just me. American citizens have rights from the Bill of Rights. But illegal immigrants I am not sure they have a right to protest. If illegal immigrants are protesting and participating in this demonstration it might be illegal because they are not supposed to be in this country. As far as the U.S. Government these illegals do not exist.
Illegal immigrants the criminals of peace and tolerance?
source: http://www.foxnews.com/politics/2011/07/02/hispanic-groups-revive-push-for-all-star-game-boycott/