Very likely there is far more to this than written here.
Very likely. Here's a snippet from a local article: "a Clark County Jail Services representative said she was being held on suspicion of assault on a federal officer."
Federal agents barrel into band at Portland ICE protest, arrest clarinetist, accuse her of assault
Article paints the clarinet player as a totally innocent bystander that somehow got "stuck" between ICE and their target but it's the only source I've seen actually quote law enforcement.
I fault OP for not doing some due diligence here.