A couple of weeks ago, Brave New Films released this devastating six-minute clip above about a Rudy Giuliani’s Achilles heel: his decision to ignore (and lie about) concerns over the FDNY’s radio equipment, which ultimately cost so many lives on 9/11.

Thanks to the film and 20,000 petition signatures collected in response, the city is going to launch an investigation.

In the midst of his presidential candidacy, former New York City Mayor Rudy Giuliani now faces a looming government investigation into his handling of the radios used by firefighters on 9/11.

The investigation, which will examine how the FDNY ended up using faulty equipment during the terrorist attacks and why Giuliani gave a no-bid contract to Motorola for that equipment, has been endorsed by New York City Councilman Eric Gioia, chair of the city’s oversight and investigations committee. […]

Gioia said, “These families deserve answers and really the entire city and our country deserve answers.... To watch this documentary and see the important questions that were asked and seemingly unanswered and ignored for so many years, it’s disturbing.”

This probably isn’t what the Giuliani campaign was hoping for. As Greg Sargent put it, “At the very least, such a probe could reveal more unflattering facts about his allegedly heroic 9/11 performance.”