Both officers involved have now been suspended.
As they should be.
That's a 'good first step'. It must go further than this.
Public servants, particularly police officers and judges, are given enormous authority to stop, detain, harass and annoy the citizen. They are given this authority so they can find and bring to trial criminals who injure the citizen.
Public servants who abuse this authority, EVEN ONCE, absolutely must be punished so severely that they will NEVER have an opportunity to do it again, and that their fellow officers would quake in fear at even the thought of doing it.