A Toronto councillor wants to target gangs and gunmen by requiring nightclubs to install metal detectors and play music that doesn't glorify gun violence before they're issued a liquor licence.

Ward 7 councillor Giorgio Mammoliti is also proposing that nightclubs not admit patrons who wear gang colours, bandanas and headgear.

"Gang music, violence and lifestyle don't mix well with liquor," Mammoliti said.

He has intervened in six cases in which nightclubs are seeking licences, intending to discuss his proposal with owners.