DENVER 4:00 pm MST At least 1,500 people marching toward stadium from Lincoln park now.
This is mainly an Immigrants rights march but others have joined. March peaceful at this time. Another Immigrants right rally is now at Rude Park near Invesco Field.
75,000 people expected to fill Invesco Field today to hear Obama. 1,000s of protesters expected to be outside the stadium today. Major interstate route I-25 to be closed this afternoon.