An ordinance allowing 34 of Chicago’s 50 wards to build additional dwelling units, or ADUs, took effect April 1. The ordinance permits Chicagoans to build small homes in their backyards, basements and attics and rent them out.

The incident, which took place in the heart of one of Chicago’s wealthiest and most tourist-friendly neighborhoods, marks the second straight day that federal agents have deployed tear gas against Chicagoans and the sixth time in 21 days.

The measure reverses the city’s 68-year ban on tiny homes but creates a patchwork of regulations that could significantly differ from ward to ward in order to uphold the decades-old tradition known as aldermanic prerogative.

A compromise proposal to allow Chicagoans to build basement, attic and coach house dwellings across the city would still give alderpeople the final say over whether the tiny homes could be built in their wards, officials said.

Under the city’s noise ordinance, private waste haulers can’t make pickups before 7 a.m. But WTTW News spotted trucks making multiple early-morning stops.

Four newly elected alderpeople joined “Chicago Tonight” to discuss public safety, community investment and planned first steps in City Council.