(Unexpected, this one:)
Hugh Sykes, BBC: Hey Extinction Rebellion! Aviation accounts for 2 to 3 percent of global greenhouse gas emissions. Cement manufacture produces four times as much CO2: 8%. Why are you targetting minor offender London City Airport instead of cement factories?...And annoyance in anyone who knows the facts instead of being seduced into this messianic new religion without doing a bit of (easy) research first.