The celebration hosted by BUILD will reflect on the power of civil disobedience and the importance of service in improving communities.
The barricades block cars from parking on a stretch of West Byron Street near Lincoln Avenue.
While the developer said the condos would be an affordable addition to the street, neighbors said it would ruin the block's character.
The man, 23, and woman, 22, were walking in the 3200 block of West 24th Street when two masked men walked up from behind and fired shots at them, police said.
"Anytime we save affordable housing, it's a reason to celebrate," a lawyer for the tenants said.
The group's annual Winter Bike Rally is Jan. 24 at Daley Plaza.
The shooting happened Thursday evening in the 200 block of North Pulaski Road.
The group is selling T-shirts and hoodies with an "Avondale Gardeners" logo on them. Sales end Monday.
The interior of the building has had all the retro signs and artwork on the walls removed and is undergoing construction.
Woodlawn would be included in the plan, but most of South Shore and Washington Park would not.