Here is a short set of images for you, taken last year in Ghent, Belgium. The three pictures show a woman in an electric wheelchair being stopped, arrested, and her wheelchair being loaded into a van for transportation to the police station.
There's one thing I learned from this particular event. If you see something interesting happening that might work as a set of images, stay with it for a while.
I walked away after taking the second image, not knowing the police were going to arrest the lady and take her wheelchair. However, when I came back, I saw that was exactly what they were doing and took the shot of the empty wheelchair in the van a tad to late. A snap of the police loading the chair into the vehicle would have been more interesting.

50mm | f/6.7 | 1/180 | ISO 160

50mm | f/6.7 | 1/250 | ISO 160

50mm | f/6.7 | 1/250 | ISO 160
- Bjorn