Trouble started when some of the protesters outside Sir Robert McAlpine’s office in the Merrion Centre in Leeds were invited inside to visit neighbouring offices of the PCS union. Security had other ideas.
Until that point, the protesters had obeyed instructions to protest only outside the building.
Security personnel barred anyone from entering the building and then, according to a statement from the Ucatt union, assaulted several of the protesters. One of the protesters was hospitalised after the confrontation, Ucatt said.
Ucatt Yorkshire regional secretary Rob Morris said: “This was an appalling incident and was totally unnecessary. This was an entirely peaceful and good natured protest and for security to act in this way is reprehensible.”