I was home from work that day and watched it all unfold on BBC news. The presenter who was covering the story had an office worker from millbank on the phone and for the duration of the interview he was desperately trying to get the office worker to admit that they were in fear of the protesters. He failed.
Although i paraphrase, at one point the interview sort of ran like this:
Presenter: "But surely you are all feeling scared in the office right now?"
Office worker: "Not really, no"
Presenter: "But surely you are all feeling worried for your safety in the office right now?"
Office worker: "No, not really. They have a right to express their views..."
Presenter: "Aren't you all just a little unsettled by everything going on out there?"
Office worker: "Well.... No, it's actually ok in here despite what you are showing at the moment"
Presenter: "Will you not agree with me that you aren't all at least the teensiest bit concerned by proceedings..."
Office worker: "No"
..and so on for about 5 minutes or so
The subtext of the questioning was quite clear: try and get the worker to admit that there was even a tiny possibility that people in the office may be slightly concerned so their comments would be blown out of all proportion. Fair play to the office worker for not falling for it