It will be interesting to see what they do on May 1.
My guess is that they will attempt to take the 'high road' with establishment speakers, American flags, no mexican flags or "La Raza" crap, and no ignorant turd world chants. Emphasis will be on the "immigrants' desire to share in the American dream, not hijack it.
Will it work? We'll see. The demonstrators are dumbasses and useful idiots, but their handlers are rich and smart.