Here she is collecting litter:
I expect the message here was to show that Bristol Council (of which she's a member) has rejected the proposal to empty bins only once a month.
Here she is in a slightly longer sequence, standing next to the charismatic half of the Green Party leadership, explaining something to a fellow councilor who has a bottle in his pocket.
No, it isn't mandatory for all members of the Green Party to have the same haircut.