I was in the National Guard, just after the riots, hit the streets one night briefly during one of the war moratoriums in.....ahhhh.....1970?

Guardsmen are not trained to be police, and should never be used as such except in cases of civil insurrection such as the riots.

IMHO that would cause headaches of un-imaginable proportions. You might as well gather armed civilians for neighborhood militia/vigilantes, as to use the guard.