It is more than likely there were faults on both sides.
Is it?
What are your reasons for stating this?
Are they based on any evidence?
On my brief brush with this issue when I was living in Nottingham in the 80's the police were very heavy handed even with those of us not directly linked to the strike.
When travelling to see my Mum who lived in Mansfield 15 miles from Nottingham we were subjected to road blocks, questioning of where we were going, and your reasons for going there; these were not imo the hallmarks of a free democracy. It did feel rather as if one had wandered into Eastern Europe.
The police over-used their powers whatever the supposed provocation was.