Then they were trained wrong.
A New York Grand Jury agrees.
A New York City grand jury? Pardon me if I'm underwhelmed.
The fact is, police get away with using excessive force all over the place, all the time. The police should go out of their way to avoid such brutality, even at the risk of their own safety.
Enough is enough with all this police excess, and never being held accountable for it...
We can probably agree that the law they were enforcing was BS. However, there are lots of laws I don't agree with, but am not willing to die for.
The alternative is anarchy and chaos, things which appeal to your average libertarian and liberal.