To my way of thinking, they are foreign invaders on our soil. I don't care what their intentions are or how benign they are. They have invaded the country by not adhering to our entry laws and now they can be treated as such.
I don't think we should go on a shooting spree, but I do think that bypassing trials and letting military tribunals handle the particulars of ending the invasion are justified.
Believe me, I am a hawk on illegal aliens. I would love to see them all rounded up and deported...only reason I don't include long prison sentences is that it would cost too much money.