Greenwire: Green groups are running from a new British advocacy video in which environmentalists deal death to those who refuse to cut their carbon footprints. The four-minute video — produced by the London-based group 10:10 — features a host of celebrities encouraging the public to work to reduce their greenhouse gas emissions by 10 percent. It also features a scene in which a schoolteacher explodes two students who refuse to take part in the campaign, turning the children into a red …