Thanks for the background on Villaraigosa.
Mayor "Reconquista" does seem to be front and center at these "protests".
This is the official logo of the "student group" MEChA. The eagle is holding lit dynamite bomb, and an aztec head-chopper. The map shows the MEChA goal: tearing away the US Southwest.
Mayor VillaRecnoquista was a founding member of UCLA MEChA. 
