I'm not sure if this was deliberate. I walk with a stick, and I'm not the fastest. Sometimes people kick the stick and you can tell it is deliberate, other times it might be an accident.
So my stick was kicked and put me off balance, whilst regaining my balance my stick when down with most of my weight on it (I'm not light) but onto the foot that had done the kicking.
I used to drive on the M6 toll quite a lot, mostly drivers are sensible, occasionally you got an idiot.
But when you use the road a lot you get to know the unmarked police cars, on more than one occasion I have been overtaking a small green golf at 70 mph and I have been tailgated and beeped at to go faster, but I know that golf has 2 police officers sitting in it and as soon as I pull in front to be overtaken by the idiot the flashing lights will go on.