protests
"This is just a warm-up, there will be a huge mobilization in January," one protester said.
One activist called on people to "rise up" and shut down the Magnificent Mile shopping area on Friday.
They spent a lot of time looking at protestersâ tweets.
WHAT'S HAPPENING
A solar telescope on Maui is facing opposition similar to the Thirty Meter Telescope on the Big Island.
The crowd of around 100 demonstrators was mostly calm and peaceful.
The Rev. Al Sharpton will lead a march demanding federal charges.