The federal plaza was filled with protesters. It takes around 5,000 protesters to fill the plaza. But part of the plaza -- about 20% of the area, was blocked off, including around the Calder statue ... obstensibly for repairs. Protesters are calling the top mobilization at federal plaza at around 2,500 to 3,000 people. Around 1,000 total people were in motion on Dearborn -- that's where the 1K number comes from. CLTV reported 'thousands'.