Interesting math you've got there, dude.
20 x 500,000 = 10,000,000.
By your math there are 10M illegals in Dallas metro, which has a total population of roughly 6M. As I have family in the area, I know there are at least 6 native born Americans in the metro area.
Did you ever stop to think that some significant portion of the .5M, accepting your numbers as accurate, are legal aliens, naturalized or native born citizens? I know a great many "Americans" joined these people in their demonstration.
You know a "Great many" of those that supported illegal aliens as millions of them marched on our cities making demands and threats?
Remember what I said to you above regarding being suspect of you? You just confirmed my justified suspicions.
Here, I'll repeat what I posted to you earlier.
I don't think a 500 ton hydraulic lift could open your eyes and I suspect you have a conflict of interest buried in your argument.