Thousands are expected to be here in May.
The mayor's office and the police department have said they don't have any plans to cut access to cell phones or social media. But Munoz says similar action has been taken in San Francisco. When things get heated, he doesn't want Chicago to have the option.
"Government's first instinct is to try and suppress communications," said Munoz. "And we want to set out a policy. We want to say we will not suppress communications, that we want this sort of social media communications."
The ordinance will go to a council committee for discussion.