Invisible Children, the nonprofit group that produced a hugely popular half-hour documentary about the notorious African warlord Joseph Kony, says it will release a new film Monday to respond to criticism and questions over its approach.

The group's "KONY 2012" video had been viewed more than 72 million times on YouTube by late Sunday. Invisible Children, based in San Diego, said it wants to make Kony a household name and drum up global support to end the killings, rapes, abuses and abductions committed by the Lord's Resistance Army, or LRA, in central Africa.

But with the popularity of the video and kudos to the filmmakers for raising awareness of an African tragedy came a flurry of questions about Invisible Children's intentions, its transparency and whether the social-media frenzy was too little, too late.