More than a hundred boisterous activists rallied outside the City Council chambers Wednesday morning, dancing and clapping their hands to “Let’s Talk About TIFs,” a song set to the tune of Salt-n-Pepa’s “Let’s Talk About Sex.”

What they really wanted to talk about was the way the city spends the roughly $500 million a year generated by its TIF program. They’re calling for 20 percent of it to be set aside for affordable housing.