United States Constitution: First Amendment.
once again citizens.
they are illegal.
If they hate it so bad then go back to f*ing mexico
Get it?
Here it is, turkey.
http://www.usconstitution.net/xconst_Am1.html
Congress shall make no law respecting an establishment of religion, or prohibiting the free exercise thereof; or abridging the freedom of speech, or of the press; or the right of the people peaceably to assemble,
and to petition the Government for a redress of grievances.
The key term is "...the people...". This refers to the people of the United States of America (it's citizens and legal residents), not alien invaders.