Guilty by Association?

“If there are anarchists, if there are weapons, if there is an intention to engage in violence and confrontation, that obviously raises our concerns,” Portland police Lt. Robert King said.

See what he did there? The very presence of people with a political opinion the police dislike is a reason to increase their aggression. Anarchists = weapons = intent to engage in violence. Is this based on actual knowledge, or convenient assumptions and stereotypes, do ya think?