Students are Protesting, can someone explain the immigration issue?

[The Mystery Machine]

OK, it looks pretty significant. Tons of kids in Texas are protesting at the High Schools.
California looked WOW.

The news blurbs are not real clear. So what is going on?

 

[bicker]

This thread goes over all of the sides of this issue:

http://www.disboards.com/showthread.php?t=1066303