How to get to the rally via public transit:
Daley Plaza, 50 W. Washington Street, is at most 1 block away from all downtown El lines (Blue, Green, Red, Brown, Pink and Orange).
As for downtown Metra terminals, it is 3-1/2 blocks west of the Millennium Station, 6-1/2 blocks east of the Ogilvie Station, 9 blocks northeast of Union Station (where Amtrak also comes in), and 8 blocks north of the LaSalle Street station. The map on Metra’s website is pretty handy.
August 25th march route in pdf