What was discussed in the class!

In today's last case , involving the lorry accident, a real life example was given by someone about the looting of coal from trains in Dhanbad. But I picture it differently. While, the lorry's was a one time incident, the coal loot occurred quite often as the train used to pass that region from time to time. So, while the train case is an example of well planned collective action, the lorry incident is a case where a leaderless group exists and people's motivations are triggered by observing others.