Alleged context (feel free to correct if you have info in comments):
After Israeli Maccabi hooligans terrorized Amsterdam, the Dutch government demonized the pro-Palestine movement and banned protests. People came to protest anyways (peacefully)
The police arrested peaceful protesters and put them in a bus. They were driven to a parking lot. The police released them from the bus in a parking lot near a station.
While the protesters were walking to the station the police started hitting them. Allegedly for not moving fast enough.
I have been to plenty of protests, where it got rough. I have been arrested several times at protests as well.
I prefer a shove and a couple of hits with a bat to legs and torso to spending a day in lockup, getting my ID and fingerprints taken, and later a fine on top. Riot cops aren’t gentle when they arrest you.