I think the demonstrations, with the pictures of Mexican flags, burnings of American flags, etc., have done a great deal to HARM the position of "illegal aliens". People I know, who have never really formed an opinion on the border issue (dumbbells!), have finally embraced the outrage! They've finally gotten the big picture.
One lady even fired her longtime gardeners when they couldn't produce green cards. She, finally, saw herself as part of the problem---one of those illegal employers.
Sing you might go to the master thread below and post your story. You may get her to help ID someone.
Master thread U.S. BORDER PATROL: Turn In Illegal Aliens (and employers
I suggest looking around and see if you might spot a suspect. At work, at school, at a job sight, Micky D's, Store etc.
On the day(current plan is May 1) of this march check to see if you can determine if someone took the day off. Confirming grounds for suspicion.
:) Easy Does It