It’s 8am last Wednesday and 10 people in orange hi-vis vests stroll out onto one of the busiest roads in the City. They aren’t doing emergency roadworks but their actions will still cause miles of traffic jams. The bright orange banners they unfurl bear a crude black skull logo. As they chant “no coal, no oil, no gas”, police mill about, explaining to angry drivers that they are unable to do anything, as the group aren’t causing “serious disruption”. Last week’s slow marches through London are just the latest wave of action from the protest group Just Stop Oil. Since...