I've only just seen this video about G20 and Ian Tomlinson. I was in a similar situation a few weeks back when asked to move a hostile crowd back after a huge kick off outside a night club. At one point my stick was out as the crowd came forwards. In the end I ended up walking some lads away with my arm around their shoulders. It's a tough call - We are personally accountable for any force we use, and in the finest traditions that means writing it up. That includes just getting your stick out, not just using it. I'm definitely mellowing out with age and experience, but I will still meet you head on if the need arises, with what I deem to be reasonable force.
Don't want to write anything else. That could have been me there in days gone by. In fact it could be me tomorrow, who knows. I was thinking of applying to be level 2 trained again because the doctor said I could, but now I'm not too sure. I think I know what's coming. You now understand why I preach Peace and Love, not a bad mantra to keep to. Sometimes this is a shit job.