This week’s spontaneous protest in south east London, which derailed Home Office plans to move a group of asylum seekers, was we were told an exercise in “community action” – concerned citizens, including local people taking direct action in support of the defenceless. Don’t be fooled, these pop-up protests are nothing of the kind. They are crammed full of the usual suspects, the activist groups who have caused and continue to cause no end of disruption in the name of whichever perceived injustice they happen to muster around on any given day. On Thursday, it was an effort to halt a bus transf…