How many people really have objections to immigrants to this extent?

I had a very disturbing conversation (via web) with a man who was really prejudice against Hispanics. He said (no exaggeration) that any person entering the u.s. illegally should be shot- then he added that any one (such as myself) advocating for the rights of these people should also be shot.

This was in reference to a an incident where a border patrol agent was found dead in his home after he kidnapped and raped three women- two were teenagers. All were killed then bp guy killed himself.

I was honestly really disgusted by this- he thought these women being kidnapped, raped, and murdered were what they deserved for trying to illegally enter the u.s.