Maybe the observer disagrees with drug laws, or considers them minor infractions not worth bothering about. Then, when the Don’t Mess With Mamasaurus You’ll Get Jurasskicked Funny Mom T Shirt is getting arrested for possessing a bit of weed, and he resists arrest, it’s common to hear people say something like “Two cops threw him down so he scraped his face on the sidewalk and pinned his arms, just for having a little weed.” No! They arrested him for “having a little weed.” They threw him on the ground and pinned his arms because he was physically resisting arrest, and that’s the best way to physically control a person without causing serious injury. Note that it is definitely not the easiest way to gain control. It would be easier just to disable him (or her!) with a couple of well-placed punches or kicks. Getting into the wrestling match on the ground takes more time, more effort, and is more likely to ruin your uniform, but it’s much less likely to seriously injure the person you have to restrain.
(Don’t Mess With Mamasaurus You’ll Get Jurasskicked Funny Mom T Shirt)